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All-Star Selection Bias by Team, Top 10 Overachieving/Underachieving Managers

Posted by Teflon , 22 August 2014 · 683 views

On a previous lunch hour, between bites of an All-P sandwich* I was wondering if there was a useable correlation between the number of All-Stars teams have and an expected number of wins. I thought if a team had a lot of all-stars and lower-than expected the wins, it might suggest a lackluster managing job. Higher than average wins per all-star, good managing. It turns out there actually is a very strong step up in average winning percentage for each incremental All-Star a team has. Roughly this: 1 All-Star – average winning percent of .458; 2 All-Stars, .501; 3 All-Stars, .542; 4 All-Stars, .557, and so on.

The problem with using this information is the incredible market bias in all-star selections. To be able to evaluate Yankees managers and Twins managers on common ground, each team’s positive or negative bias in All-Star selections has to be compensated for.

To do this, I counted the number of All-Star selections each year and totaled the number of total league wins. I then figured out each year’s average wins per all-star and applied this to each team’s winning percentage to determine the equitable number of all-stars each team should have had. Summing the actual number of All-Stars each team had historically and dividing this by the sum of equitable All-Stars historically creates an index value per team than can be used for the aforementioned manager evaluation.

Which team has the biggest bias in All-Star team selection? Do I really have to ask? Of course, it’s the Yankees with nearly 52% more All-Stars than a fair distribution suggests given the team’s success. This is by far and away the highest bias as the next closest team, the Cardinals, are at +23%. Rounding out the top 5 are the Red Sox at +21%, and the Dodgers and the Reds both at 13%. Conversely, the Rodney Dangerfield teams of All-Star selections are led by the Rays at -20%, the A’s and Astros at -19%, the Pirates at -18%, and the Royals at -17%. The Twins, if you’re curious, are at -15% which is 9th worst.

If you’re curious about which managers overachieved or underachieved in their careers relative to the number of All-Stars their teams had, (adjusted for All-Star bias) here are looks at the top 10 and bottom 10 calculated during today’s lunch hour between bites of a Waldorf salad. (Based on average seasonal difference between actual wins and expected wins – had to be the manager for the majority of a team’s games to be credited for that season, had to manage at least 5 seasons.)

The Good

1. Joe McCarthy +12.7 wins per season to expectation.
2. Billy Southworth +11.2 wins
3. Joe Girardi +9.9 wins
4. Bobby Cox +7.8 wins
5. Al Lopez +7.7 wins
6. Earl Weaver +7.7 wins
7. Walter Alston + 7.7 wins
8. Pete Rose + 6.7 wins
9. Billy Martin + 6.6 wins
10. Jimy Williams +6.5 wins

The Not-So Good
1. Connie Mack -12.2 wins
2. Jimmie Wilson -11.8 wins
3. Billy Meyer -9.7 wins
4. Preston Gomez -9.7 wins
5. Buddy Bell -9.3 wins
6. Ossie Bluege -8.1 wins
7. Fred Haney -7.7 wins
8. Del Crandall -6.5 wins
9. Manny Acta -6.1 wins
10. Mary Marion -6.0 wins

And finally a look at the Twins managers , ranked best to worst:

1. Billy Martin +6.7 wins
2. Frank Quilici +3.2 wins
3. Ron Gardenhire +1.5 wins
4. Gene Mauch +0.7 wins
5. Ray Miller -0.3 wins
6. Sam Mele -1.2 wins
7. Tom Kelly -2.4 wins
8. Cal Ermer -2.6 wins
9. Billy Gardner -3.9 wins
10. Bill Rigney -5.4 wins
* pastrami, prosciutto, provolone, peppers, poupon and pickles on pumpernickel




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SgtSchmidt11
Aug 22 2014 03:00 PM

Now I'm hungry...

Remember every team has to have 1 All Star(rules may have changed).Do not know how much this changes your calculation.