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Monday, August 25, 2008

Five of the ten best teams play in the AL east?

By Tangotiger, 10:05 AM

As AsrosFan is telling us:

I was just glancing at Andrew Dolphin’s ratings of MLB teams. I decided to go with the Predictive ranking.

Predictive Both schedule strength and rating vs. schedule strength are determined considering both the wins and losses and the score differentials. This rating contains none of the biases in the standard rating, but does weight recent games slightly more than past games since those are a better indication of the team’s current strength. This rating is the best of the first three for seeing how good teams are, and thus is the best for predicting future results.

I could have used Improved RPI, but I wanted one that included run differential. Here are the rankings of all 30 teams: http://www.dolphinsim.com/ratings/mlb/index_pred.html

The first thing we notice is that the AL is ranked as having 10 out the top 11 teams. Mr. Dolphin’s analysis shows the AL as being much stronger, and thus teams with worse records than NL teams can actually be better due to strength of schedule. Indeed, looking at it from the expected losses standpoint, which Mr. Dolphin says “can be used to rank schedules”, the top 14 SOS are in the AL, meaning all the AL teams. And it’s not really close.

That would be astonishing enough, but this is what really caught my eye. Down further on the page, the rankings are split up by division. If we scroll to the AL East, we find these rankings: Boston: 1 Tampa Bay: 3 Toronto: 7 New York Yankees: 9 Baltimore: 10 . All five teams in the AL East are ranked in the top 10, that is, the top third of baseball. Baltimore, which at the time of the latest update, had a 61-66 record and RS/RA of 653/653, is ranked two spots ahead of Milwaukee, which had a 75-55 record and a RS/RA of 616/555.

To which I responded to the above and other questions in that thread:

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(7) Comments • 2008/08/26 • SabermetricsForecastingTalent_Distribution
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August 25, 2008
Five of the ten best teams play in the AL east?