Monday, March 11, 2019

Top 15 MLB Hothead Managers by Ejection Frequency

We've published the Top 10 MLB Hothead Players by Ejection Frequency, so now it's time to list the Top 15 Hothead Managers in Major League Baseball. Once again, the umpire sabermetric value Games Per Ejection (GPE) will be used to determine the most frequently ejected skippers in the game.

As we used David Ortiz's 175 GPE for the players' benchmark, we will use all-time managerial ejections leader Bobby Cox's mark of 161 ejections over 4,501 regular season + 136 postseason games, or 29 GPE as our basis for illustration.

Perhaps, however, the more apropos comparison for Cox's notably incessant managerial GPE of 29 is Milton Bradley's GPE of one ejection for every 55 games played.
Related PostDetermining The League's Biggest Hothead (It's Big Papi) (6/11/15).

Rick Renteria is the most-frequent skip ejectee.
Here are the results for the ten most-frequently ejected active managers (minimum 300 games managed). Because managing a team is very different from playing on one, we'll only include data from a person's time as a bona fide manager of a major league ball club. You can also click each skipper's name that appears in the accompanying table for that individual's UEFL ejection report history.

Note that the language used—Hothead Manager—is meant as a consistent title in concert with our Hothead Players feature. Many times, however, a manager—such as Cox—would be ejected not because of a "hothead" reason, but in order to protect a player, who might instead be the true "hothead."

Legend and Definitions
Ejection Rate: Measured in Games-Per-Ejection (GPE).
GPE: Games played divided by their ejections.
EPS: Ejections per Season, based on 162 GP.

Active MLB Managers with Highest Ejection Frequency
#Player NameGames Per Ejection
Ejections Per Season
(EPS [E/GP*162])
1Rick Renteria276.05
2Ron Gardenhire295.53
3Joe Maddon404.05
4Brad Ausmus404.02
5Clint Hurdle413.96
6Don Mattingly453.63
7Brian Snitker503.25
8Craig Counsell523.18
9Bruce Bochy523.10
10Andy Green543.00
11Ned Yost552.92
12Bob Melvin562.89
13AJ Hinch572.83
14Bud Black582.79
15Terry Francona692.35
15Scott Servais692.33

To summarize:
> Alex Cora (81 GPE and 1.00 EPS), Aaron Boone (54 GPE and 1.50 EPS), and Mike Shildt (35 GPE and 4.70 EPS) didn't make the table because they had too few games of managerial experience.
> Joe Torre (65 GPE and 2.49 EPS), Joe Girardi (48 GPE and 3.37 EPS), and John Gibbons (30 GPE and 5.32 EPS) didn't make the table because they are no longer active managers.


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