Advanced NFL Stats: Team Defense Win Probability Added 2000-2008

We've seen how the win luck indication can assistance coaches make better decisions, though it can additionally assistance settle the little H2O cooler debates around the office. One of the cold things we can do with the win luck indication is compare teams as well as players formed based upon how most they contribute to their chances of winning. If we sum up all the defense's grant toward winning the game, we can indeed rank defenses.

One group competence have the most appropriate invulnerability in conditions of total yards, as well as an additional competence have the most appropriate invulnerability in conditions of yards per play. Yet an additional competence be the most appropriate in conditions of points allowed. All of these ways of comparing defenses is injured in one approach or another. For example, the invulnerability with the poor offense will be facing short fields frequently.

Win Probability Added (WPA) can account for these various considerations as well as provide the very great guess of how great the patrol essentially was. WPA should be considered the 'narrative' stat. It measures what essentially happened as well as doesn't attempt to any more than that. I'll start by seeking at defenses since 2000, as distant at the back of as my data goes.


The WPA listed for each year have been raw totals including playoff games. In the way, we can think of them as observant 'this is the series of games the group would win given the completely normal offense as well as special teams.' For example, the 2000 Ravens invulnerability had the -6.0 WPA as well as would have won fourteen games (8+6) had their offense as well as special teams simply hold serve, making positively no grant toward winning. (Edit: Tom Tango pointed out my strange meditative was in error. we had previously pronounced 12. Thanks!)

I've additionally combined the mainstay for WPA per diversi! on to ac count for teams with playoff appearances. You could think of this series as how most the invulnerability combined to their team's possibility of winning any given game. For example, the Baltimore invulnerability (-0.17 per game) would turn the 50% possibility of winning the diversion into the 67% chance.

Negative numbers have been good, as well as positive numbers have been bad for defenses. Click upon the table headers to sort:



No surprises here. Baltimore's invulnerability is certainly the invulnerability of the decade upon the strength of their 2000, 2003, as well as 2008 squads. Tampa Bay is several games behind, both in conditions of total WPA as well as per diversion WPA. Tampa additionally owns the most appropriate singular deteriorate at -6.5 WPA. Baltimore owns the next two most appropriate seasons at -5.0 WPA. Other notable seasons belong to the 2008 Titans as well as Steelers, as well as the 2003 Patriots.

Minnesota's 2002 invulnerability as well as Detroit's 2008 invulnerability tie as the misfortune with +5.2 WPA. The Kansas City invulnerability of 2004 is close at the back of at +5.1 WPA. Also note which Houston's invulnerability would be the altogether misfortune upon the per diversion basis.

This calm has upheld by fivefilters.org.


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