Projections Update: Bid Farewell to Tampa Bay
Considering the mismatches I first projected in the National League, I would not have expected Tampa Bay to be the first team eliminated in the 2011 postseason. Once a 15% shot to win it all, the Rays will have to wait for another year. In disposing of the Rays, the Texas Rangers rise to an even more dominant position with the victorious Phillies in tow. A.J. Burnett's competent performance put the Yankees back into the discussion as they head back to New York for Game 5, while the Cardinals and Diamondbacks still find themselves on the brink.
So says our Log5 postseason simulator based on numbers from Baseball Prospectus. Raw numbers and figures of note after the jump.
Figures of Note:
- Now one game from advancing, Philadelphia's win over St. Louis brought them nearly back to their high water mark—3:1 to win it all—for the postseason.
- With both teams playing an elimination game in New York, either the Yanks or Tigers will set a new postseason high with a win.
- As it stands right now, the Yanks are a 6:1 bet for the Commissioner's Trophy, the Tigers 11:1.
- In terms of World Series victory probability, losing to the Yankees cost Detroit 7.1%.
- The Brewers' loss to Arizona cost Milwaukee 3.6% and credits the Diamondbacks a paltry 0.8%.
- On the brink of elimination, the Diamondbacks and Cardinals are now a distant 47:1 and 39:1, respectively, to win it all.
| Probability of Postseason Series Victory | 10/5/11 | |||||||
| Inputs | Outputs | |||||||
| Team | Seed | Talent | LDS% | LCS% | WS% | WS HFA | ||
| NYY | 1 | 0.615 | 56.7% | 25.8% | 14.7% | -0.6% | ||
| TEX | 2 | 0.640 | 100.0% | 58.1% | 36.5% | -1.5% | ||
| DET | 3 | 0.589 | 43.3% | 16.1% | 8.3% | -0.3% | ||
| PHI | 1 | 0.605 | 82.1% | 52.5% | 24.5% | 1.5% | ||
| MIL | 2 | 0.554 | 78.5% | 32.1% | 11.4% | 0.7% | ||
| ARI | 3 | 0.519 | 21.5% | 7.3% | 2.1% | 0.1% | ||
| STL | WC | 0.530 | 17.9% | 8.1% | 2.5% | 0.1% | ||
| AL | 59.5% | -2.5% | ||||||
| NL | 40.5% | 2.5% | ||||||
Methodology: Our simulator predicts the outcome of every possible single-game match-up in every potential five- and seven-game series match-up between the eight teams currently in line for a playoff berth. Baseball Prospectus' Adjusted Hit List serves as proxy for true talent. We use the Log5 method to predict single-game match-ups, adjusting each number to reflect a 0.540 home field advantage (based on Matt Swartz's findings). The simulator does not adjust for roster discrepancies, pitching rotations, or any stadium-specific home field advantages that may or may not exist.
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HFA by matchup
I was just reading through this article, enjoying J-Doug’s hard work, and then I saw my name cited on HFA— cool!
If you want to add a layer to the model rather than just .540 home-field, try this:
Same Division, Same League: .533
Different Division, Same League: .542
Different League: .551
Awesome, thanks Matt
Not sure if I’ll adjust the model this year or next, but this is good info.
Q: Does the different league HFA work both ways, or, as history might imply, do AL teams have a bigger HFA than NL team?
Blogger and Editor, Rational Pastime Blog. Twitter: @RationalPastime.
above, it loooks like NL teams average about .550 talent level and AL teams averaging about .610. i think that comes from matchups, so either AL teams have bigger HFA and we’ve wrongly attributed it to AL being more talented on average, or more likely, the AL is just better. but either way, the “talent” variable should account for any difference i think.
Alright, thanks Matt
Makes sense, since I’m using Adjusted Hit List which already makes a league adjustment.
Blogger and Editor, Rational Pastime Blog. Twitter: @RationalPastime.
Great job with these
I love these daily graphs. Keep up the great work!
Contributor @ Beyond the Box Score. Edtior @ Wahoo's on First. Sophomore @ Brown University. Twitter: @LewsOnFirst
"Baseball, it is said, is only a game. True. And the Grand Canyon is only a hole in Arizona."—George Will
Thanks Lewie
Glad you’re enjoying them.
Blogger and Editor, Rational Pastime Blog. Twitter: @RationalPastime.
Glad I'm able to share with you my playoff angst.
I assume based on your profile you’re pullin for the Phils?
Blogger and Editor, Rational Pastime Blog. Twitter: @RationalPastime.
Seems pretty on.
Id say texas and philly should be closer to the pack, but they are the two favorits id say. I like the brewers and the tigers though. And can you ever really count out the yankees.
Yeah, I agree with you on the Rangers and Phils
I’m relying on BPro’s talent numbers here, so there isn’t much I can do about that. I personally don’t think Texas is this much better than the rest of the AL, especially not in a short series.
Blogger and Editor, Rational Pastime Blog. Twitter: @RationalPastime.

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![The Toughest Pitches to Hit in Baseball by Darren Everson at the WSJ, featuring data from us here at BtBS. Pitch IDs are a mix of mine and Gameday's.
[Sky: Right now the WSJ has a preview up for subscribers only, but you can find the full article in Friday's print edition and I'm pretty sure the online version will become free at some point, too. Tune in Friday here at BtB for some additional related stats. Nice job, Harry.]
Update: Expanded article is up.](http://cdn2.sbnation.com/fan_shot_images/59626/wk-aq423a_sp_co_ns_20090709191156_small.gif)


























