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NFL Rankings, Week 5

By Tom Kellogg 2 Comments

Okay New England, we get it.  You’re good at football.  And St. Louis, it is likely that you’re already thinking more about the race to acquire Andrew Luck than the race to make the playoffs.  But today I’m not interested in the highs and lows of The Power Rank, I’m taking a shot at it’s sweet, juicy center.

To get a look at what truly constitutes the center of the Power Rank grouping, I used a mathematical formula for Standard Deviation, something that defines the variation from the mean (or average) in a data set.  If you’re enough of a nerd to not stick your tongue out at that definition and want to know more, you can look at Wikipedia’s explanation.

If you’re like me and most math classes made you go crossed-eyed and start drooling on yourself, all you really have to understand is that the bulk of a group (about 68%) falls within 1 standard deviation of the mean on either side, and that the bulk of the remainder (about 27%, for a total of 95% of the whole) falls within 2 standard deviations of the mean.

In other words, teams whose rating falls within 1 standard deviation of the mean (always 0.0 for the Power Rank) are all horribly mediocre.  Ok, that’s my inner pessimist coming out.  A more optimistic view for Eagles and Falcons fans might be to say that they are “on the bubble” when it comes to elite NFL teams (or horrible NFL teams, but we won’t dwell on that).  On the other hand, teams that exceed 2 standard deviations of distance from the mean are truly in a class of their own, either high class or low class depending on which side of the curve they are on.

That’s about as much explaining as I can do, although further questions about the mechanics of this process can be emailed to Ed, who will no doubt be able to give you a thorough explanation of the math that goes into this process.  For my part, I just plug numbers into a free online calculation program and analyze the output.  Ah… sweet, sweet technology.

On to football.

The standard deviation in this week’s power rank is 5.49.  That means that the bulk of teams will fall between 5.49 and -5.49, almost all teams will fall between 10.98 and -10.98, and teams beyond those ratings are truly special.

Congratulations to the Patriots (#1, 15.79) and the Packers (#2, 11.31) for pushing the limits and existing beyond the norm.  Perhaps even more congratulations are deserved by St. Louis (#32, -9.89) for not exceeding the norm…

Very few teams fall between the first and second standard deviations.  On the high side only Baltimore, Detroit, and New Orleans (by a hair) make the grade as especially good teams, whereas on the low end Denver, Arizona, Cleveland, Kansas City, Seattle, and St. Louis all currently qualify as truly not very good teams.

That leaves the other 21 teams in the true statistical middle of the road.  Being in the middle isn’t all that bad, as you are supposedly as close to the top as you are to the bottom.  This is great news for 2010’s weekly bottom dweller Carolina, who finds themselves just within the boundaries of that first standard deviation, but not great news for teams hoping to return strong and make another playoff run like Pittsburgh, Atlanta, or Philadelphia.  Most importantly for these middling teams, their current ratings are not a death warrant for the season, they have no cause for alarm and no need whatsoever to join in the chase for the Andrew Luck Sweepstakes.

A few things to consider for these middle teams:

1.  The current standard deviation is almost 1 point bigger than it was at the end of last year when it ended up at 4.59.

2.  At the end of last season The Power Rank was a little more balanced with one team above 2 standard deviations (New England) and one team below (Carolina).  Currently the two teams exceeding 2 standard deviations from the mean are both on the high side. Most likely, either New England or Green Bay will fall back into the sweet center during the season.

3.  When one (or both) of the juggernauts fall they will bring that standard deviation down with them.  This will cut some teams out of of the running for average status (look out Indianapolis, Jacksonville, and Carolina!) but on the upside a few teams may be thrust into greatness without needing to earn it (it may finally be the year for Houston or San Diego to go all the way).

4.  When the standard deviation shrinks a couple struggling teams may also become hopeless.  But come on, we are only one quarter of the way through the season!  Now is the time for Vikings fans to Ponder over whether or not they can finish out 12-4, Miami fans to Marshall their courage, and Colts fans to…  oh, who am I kidding?  Without Manning they have lost their identity…  they should focus on battling St. Louis and Kansas City in the race for the #1 draft pick in 2012.

Filed Under: Arizona Cardinals, Atlanta Falcons, Baltimore Ravens, Carolina Panthers, Detroit Lions, Green Bay Packers, Indianapolis Colts, Kansas City Chiefs, Minnesota Vikings, National Football League, New England Patriots, New Orleans Saints, Philadelphia Eagles, Pittsburgh Steelers, Seattle Seahawks, St. Louis Rams

NFL Rankings, Week 4

By Tom Kellogg Leave a Comment

Upper middle class
The Eagles, Falcons, Steelers
Room for improvement

This week, we see the rankings compress a little bit more, a trend that should continue over the next few weeks as this year’s games stabilize.  The Patriots remain #1 with a 14.73 rating after losing in a shootout with red-hot Buffalo (#13, 1.20).  The Chiefs helped their fans get off the ledge by keeping the game with San Diego (#12, 2.02) to within a field goal, so despite their loss they climb out of the cellar to #30 with a rating of -8.26.  The Rams now occupy the not-so-coveted #32 spot with a rating of -10.96  after a humiliating loss to #3 Baltimore (7.75).

What this means is that last week the range of ratings between #1 New England and then #32 Kansas City was 35.63, whereas this week the difference between #1 New England and new #32 St. Louis is 25.69.  That’s not encouraging news for Rams fans, or for the entire state of Missouri.  What is does indicate is what the scoreboards have shown this year:  no team is utterly dominant (sorry, Mr. Brady) and no team is completely pathetic.  Bad, maybe…  but not insanely horrible as Kansas City’s -19.52 rating last week indicated.

The news is best for fans of the “upper-middle class” of the football teams.  Not the dominant upper crust teams like New England (#1, 14.73, Green Bay (#2, 11.37), and Baltimore (#3, 7.75) with giant stretches of blue glory next to their names.  No, this news is for the fans of teams between rank 4 and 16.  The fans of teams that were supposed to come out with guns blazing, but have somehow tripped over the starting line.  What happened to the free-agent force of the Eagles (#15, 0.82) that was so highly touted by the offseason hype machine?  Wasn’t the return of Matty-Ice with Julio “the missing piece” Jones supposed to take the Falcons (#16, 0.62) from a playoff team to a Super Bowl favorite?  Did the mighty Super Bowl runner-up Steelers really fall to #6 with a good but uninspiring rating of 3.97?

It is these teams who should take note of this week’s movement.  Success in climbing The Power Rank ladder isn’t going to be as much about raising their rating from the 0-4 range up to the heights of Patriots in the teens.  That just won’t happen.  Because the outliers like the Patriots and Packers have little to gain (mathematically speaking) by crushing teams that The Power Rank expects them to crush.  But they can lose a lot by falling to teams who are beneath them.  Even close wins to inferior teams will lower their prestige.  So Big Ben and the Steelers don’t have to worry about trying to hang 70 on the the Brown and the Bengals to catch up.  The Eagles don’t need DeSean Jackson to return 2 punts for touchdowns every game to become elite.  If they can just continue to win for a few more weeks, the over-inflated Patriots and Packers will fall to more reasonable and reachable positions.

*Interesting note:  Running numbers from this year alone, the Bills would be The Power Rank’s chosen team with a rating of 14.28, with the Raiders not far behind with a 13.97 rating.  St. Louis would still be in the cellar, but at an astounding -23.50 instead of their current rating of -10.96.  While the Bills are definitely the hottest team in the NFL and a quickly growing fan-favorite, their official position of #13 suits them quite a bit better.  The Bills have proven that they have the talent, but they still have yet to prove to the league and to the algorithm that they have the ability to be consistent.  Because after all, that is the mark of a true champion.  By considering last year’s data as well as this year’s, The Power Rank cuts through the knee-jerk reactions and keeps the Bills somewhat humble with objective mathematical analysis, while still allowing them room to continue climbing up the ladder if they continue their run of impressive wins.

Filed Under: Atlanta Falcons, Baltimore Ravens, Buffalo Bills, Football Analytics, Green Bay Packers, Kansas City Chiefs, National Football League, New England Patriots, Oakland Raiders, Philadelphia Eagles, Pittsburgh Steelers, San Diego Chargers, St. Louis Rams

NFL Rankings, Week 1

By Tom Kellogg Leave a Comment

Pittsburgh, still near top
Arizona, not so great
Bills near the middle

Week One in the NFL – a glorious time when half of the league’s team become undefeated and their fans begin talk of this being “the year”, while the other half of the teams wallow in winless shame and their fans open up the forum to the debate over whether to tar and feather or just fire their team’s head coach and general manager.

Here at the Power Rank we pride ourselves in diligently working to stay out of the emotional mire that surrounds the first few weeks of the season.  In the past, we achieved this by quietly sitting back and waiting for a few weeks’ worth of data to roll in before beginning our own talks about who would be in or out of the playoffs.  This year we are boldly stepping up to bring you rankings after only one week of games while still keeping a data-driven analytical view of the game.

This year the early season rankings will account for some past data as well as using this season’s data.  This amalgamation has produced a ranking that places some undefeated teams near the bottom of the pile, while allowing other winless teams to hover near the top.  Let’s take a look at a few key examples:

Pittsburgh – Still Near the Top

The Steelers took one on the chin last Sunday, losing 7-35 to a bitter division rival, the Baltimore Ravens.  In spite of having the second worst season opener (after the Chiefs) in the league, Pittsburgh remains firmly in the top ten Power Rank teams at #8 with a rating of 4.34.  The Power Rank’s algorithm was generous to last year’s Super Bowl runner up because of their stellar showings in 2010 and the fact that the Ravens are a powerhouse as well, starting the 2011 season at #3 in The Power Rank with a whopping rating of 10.15 that is no doubt inflated by coming out and dominating one of the NFL’s more solid franchises.  With most of their talent returning it is a fair assumption to expect the Steelers to come back and earn their high standing in the coming weeks.

Arizona – Stuck in the Cellar

With all of the buzz surrounding the performance of rookie quarterback Cam Newton of the Carolina Panthers, some people seem to have forgotten that he didn’t get the most important stat a quarterback can earn:  a win.  Kevin Kolb arrived in Phoenix this year to help the Cardinals undo the damage the Derek Anderson inflicted on the franchise, if that is possible.  Kolb started the season the right way by guiding the Cardinals to the win column, a place that was largely unfamiliar to them in 2010.  So while Arizona shares the same record as the Patriots (#1), Packers (#2), and Ravens (#3) they are stuck near where they ended last season at #29 with a rating of -9.93.  The Cardinals suffer because The Power Rank is not convinced by a victory over last year’s weekly #32 team, the Panthers, who find themselves in familiar territory in 2011 with a ranking of #32 and a rating of -13.02.  In terms of both Arizona’s record and Newton’s 400+ yard performance The Power Rank is sticking with Public Enemy’s sage advice:  Don’t believe the hype.

Buffalo – Bill-ieve the Hype

Ok, maybe not all of it…  Ryan Fitzpatrick will not likely keep up his 4 touchdown per game pace and end the season with a record shattering 64 touchdowns.  Nor will the Bills be likely to snatch an AFC East title away from the Patriots (#1) or the Jets (#7).  On the other hand, the Bills earned a solid boost in The Power Rank by climbing to #18 with a rating of -0.02 by beating last year’s AFC West champion Kansas City Chiefs, who fell hard to #31 with a rating of -10.66.  Fans of perennially successful franchises may scoff at these numbers, but they indicate that the Bills might just possibly have a team good enough to break .500, or even maybe just possibly sneak into the playoffs.  This is monumental for a team that hasn’t been to the playoffs since the 1999 season, and who have only had one winning season since that year.  Yes, it is too early to say that the Bills are firmly on the rebound, but for Buffalo’s beleaguered fans it is never too early to start partying like it’s 1999.

Week 2 Matchup to Watch – Chicago (#4, 7.90) at New Orleans (#5, 5.22)

Coming off a huge win against 2010 powerhouse Atlanta, Chicago is looking to beat another NFC South juggernaut by stopping Drew Brees and the Saints on their home turf.  With the visiting team holding a slight rating advantage the Power Rank is going to predict that this match is too close to call, and too exciting to miss.

Filed Under: Arizona Cardinals, Baltimore Ravens, Buffalo Bills, Kansas City Chiefs, National Football League, NFL 2011, Pittsburgh Steelers

Super Bowl XLV Post-game

By Tom Kellogg Leave a Comment

For the Super Bowl post-game analysis, let’s take a look at the key matchups that I had identified in the pre-game article:

BJ Raji vs Doug Legursky (Not Maurkice Pouncey)

Even though stat sheets aren’t going to show that BJ Raji dominated the line in Super Bowl XLV, he and the rest of the Packers defensive line unit did a terrific job.

Pittsburgh’s running backs Mendenhall and Moore were able to average more than four yards per carry and score a touchdown, but most of their rushing success was at the edge rather than up the middle.  When a rushing team like Pittsburgh can’t get holes opened between the tackles they are going to have problems as the Steelers did on Sunday.

Also, the Packer’s pass rush up the middle collapsed the pocket on Ben Roethlisberger a number of times.  This includes the play where Roethlisberger was forced to make a bad throw that ended up being intercepted by Nick Collins for a touchdown.

Tramon Williams and Charles Woodson vs Hines Ward and Mike Wallace

In spite of Charles Woodson’s collar bone break the Packers secondary held strong on Sunday.  Wallace was able to break free a couple of times, including once for a touchdown, but he and Hines Ward were too often stopped on critical third down play that ended Pittsburgh drives and put the ball back in the hands of the Packers.

The Packers defensive backs also created two of the Packers three takeaways that ultimately proved decisive in the game where their offense didn’t turn the ball over once.

Aaron Rodgers vs Troy Polamalu

Aaron Rodgers’ numbers say it all – 304 yards, 3 passing touchdowns, and 0 interceptions.  One of his touchdowns was a pass to Greg Jennings into a coverage hole that has been left open by Polamalu who had been faked out by Rodgers’ looking away from Jennings until he turned to throw the ball.

Some analysts have been saying that Rodgers should have had more yards because of all of the perfect passes that were dropped by Green Bay’s receivers.  I think the important thing to note is that Green Bay’s receivers, especially Jordy Nelson, did such a fantastic job running routes and finding holes in the Steeler pass coverage that the drops just looked spectacular because they could have easily gone for touchdowns.

People expect there to be animosity between the quarterback and receiver when dramatic drops like that occur, but that’s rarely the case.  When the receivers get open as often as the Packers receivers were, the conversation in the huddle is almost always a discussion of how that route succeeded or how that matchup is clearly favorable, and how to best go right back to it.  Which is what Rodgers and Nelson did all night long.

Polamalu’s unit was simply unable to adjust to the Packers passing scheme and Rodgers’ execution, and this matchup went decisively for the Packers.

Pittsburgh Linebackers vs Green Bay Offensive Line

Fans will remember a game that was more or less dominated by Green Bay, but Green Bay didn’t dominate their own line of scrimmage. The Steelers pass rush was able to sack Rodgers three times on Sunday with two of those sacks coming from the linebackers.  Rodgers was hurried and hit even more throughout the night and never did have an ample amount of time in the pocket.

Unfortunately for Pittsburgh, winning this matchup wasn’t as significant as losing the matchup between Polamalu and Rodgers, and the Green Bay quarterback was more often than not able to find his open targets before the pass rush got to him, sometimes only just.

Ben Roethlisberger vs Clay Matthews

On paper, Ben Roethlisberger clearly won the sack matchup against Clay Matthews who recorded no sacks, and the Green Bay defense which as a whole only earned one against Pittsburgh’s sturdy quarterback.

Instead of lone blitzers like Matthews fighting free and trying to make solo tackles, the Packers’ pass rush was so completely dominant that Roethlisberger never got much of a chance to slip away from tacklers as he so often does.  Pockets collapsed on Big Ben all night forcing him to make bad throws including two interceptions.

When Roethlisberger did manage to escape it wasn’t backward or laterally – meaning he couldn’t throw.  The pass rush from the sides (where Clay Matthews rushes from) instead pinched off behind Roethlisberger, forcing him up past the line of scrimmage where he could only run for yards rather than pass for them.  Roethlisberger rushed four times for 31 yards in the game which seems like a solid rushing performance, but in reality those small victories prevented the Steelers from doing what they do best – letting Roethlisberger make time for receivers to get open for a big pass play as Santonio Holmes had done for a Super Bowl victory two years earlier.

Stay tuned for The Power Rank year-end wrap up!

Final NFL Rankings after Super Bowl, February 2011:
1. New England, 14-3, 10.65
2. Green Bay, 14-6, 9.49
3. Pittsburgh, 14-5, 6.41
4. Baltimore, 13-5, 5.83
5. New York Jets, 13-6, 5.10
6. Chicago, 12-6, 3.55
7. Philadelphia, 10-7, 3.07
8. San Diego, 9-7, 2.98
9. Indianapolis, 10-7, 2.91
10. Atlanta, 13-4, 2.55
11. New Orleans, 11-6, 2.53
12. Detroit, 6-10, 1.13
13. Miami, 7-9, 0.42
14. New York Giants, 10-6, 0.40
15. Tennessee, 6-10, 0.37
16. Cleveland, 5-11, 0.18
17. Dallas, 6-10, -0.71
18. Oakland, 8-8, -0.78
19. Houston, 6-10, -0.94
20. Minnesota, 6-10, -1.26
21. Cincinnati, 4-12, -1.36
22. Tampa Bay, 10-6, -1.40
23. Kansas City, 10-7, -2.15
24. Washington, 6-10, -2.36
25. Jacksonville, 8-8, -3.48
26. Buffalo, 4-12, -3.74
27. St. Louis, 7-9, -3.99
28. Seattle, 8-10, -4.80
29. San Francisco, 6-10, -4.80
30. Denver, 4-12, -5.70
31. Arizona, 5-11, -8.06
32. Carolina, 2-14, -12.06

Filed Under: Green Bay Packers, National Football League, Pittsburgh Steelers, Super Bowl

Super Bowl Preview

By Dr. Ed Feng Leave a Comment

The Super Bowl features a matchup between two unique franchises. The Pittsburgh Steelers have been owned by the Rooney family since their inception in 1933. Since the 1969 season, they have had three head coaches and won six Super Bowls. The San Francisco 49ers have had three head coaches in the last four months. The Green Bay Packers are a non-profit franchise. That’s right, their founding documents do not allow them to make money. The Packers are owned by their passionate fan base, like Tom’s aunt who has a chunk of the old Lambeau field in her freezer.

On the field, the game will be intense, as the players won’t play another meaningful game for another 7 months. How will Pittsburgh’s center, who has never started an NFL game, matchup against Green Bay’s immovable man child BJ Raji? Can Troy Polamalu read the soul of Aaron Rodgers? Does Ben Rothelisberger or Clay Matthews weigh more? Tom breaks it all down in his preview.

Here, we’ll focus on a prediction. On page 157 of the book The Odds, Chad Millman has an excellent description of how Vegas sets the line for the Super Bowl. A big factor in their analysis is common opponents. This year, Pittsburgh and Green Bay both played the 4 teams in the AFC East and the Atlanta Falcons. Tom breaks down these regular season games in this table, in which a positive point differential indicates a win for the Steelers or Packers.

Common opponents of Pittsburgh and Green Bay.

Moreover, Green Bay beat down Atlanta in the playoffs by 27 points, giving an average point differential of +12. Pittsburgh avenged their regular season loss to the Jets with a 5 point win in the playoffs, leading to a 0 average point differential. Overall, Green Bay outperformed Pittburgh against 4 of these 5 teams. Vegas accounts for these games in starting Green Bay as a 2.5 point favorite against Pittsburgh.

The Power Rank also considers these common opponents when ranking these two teams. However, the algorithm also accounts for games which link Pittsburgh and Green Bay by two teams. For example, Pittsburgh beat Oakland by 32, who lost to San Francisco by 9, who lost to Green Bay by 18. We’ll spare you the math; this sequence favors Pittsburgh. The algorithm actually accounts for sequences with any number of teams between Pittsburgh and Green Bay. It’s a little difficult to track all these sequences with pencil and paper.

In the end, The Power Rank has Green Bay by 2.6 points over Pittsburgh, very close to the Vegas line of 2.5. In essence, it’s a coin flip to determine whether Green Bay wins by 3 or more or Pittsburgh loses by less than three or wins. When our prediction and the line are this close, it is not advisable to wager money. This has happened in two playoff games this year. In the other 8 games, The Power Rank beat the line in 6. We’ll see see how 2.6 does on Sunday.

Filed Under: Green Bay Packers, National Football League, Pittsburgh Steelers

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