MLB Ejection & Instant Replay Review Statistics and Umpire Sabermetrics through All-Star Break 2015 are now available. Visit 2014's
Instant Replay Review Statistics 101: Week 1 Sabermetrics for an introduction to Ejection & Replay Review definitions and terms, including Review Affirmation Percentage (RAP), also known as QOC (Quality of Correctness), Replay Percentage of Success (RPS), alternatively, 1.000 - RAP = RPS, and Manager's Challenge Success Percentage (CSP). Also included is Team Success Percentage (TSP), which includes all Replay Reviews; both Manager's Challenges and Crew Chief Reviews.
The following presentation includes summaries and detailed analysis for ejections and replay data gathered during baseball season's ceremonial first half.
Summary, Ejections.
>>
126 Total Regular Season Ejections through July 12, 2015 ("Ceremonial First Half").
>> Umpires were
67.0% accurate on calls associated with ejection.
>> The
Padres were ejected more often than any other team; the
NL West led all MLB divisions.
>> The
D-Backs &
Marlins were ejected least often; the
AL West trailed all MLB divisions.
>> Ex-Manager Bud
Black formerly of the Padres led all managers in ejections.
>> Player Matt
Kemp of the San Diego Padres led all players in ejections.
>> Umpire
Holbrook led all umpires;
Tripp Gibson was the most accurate ejector (highest E-QOC).
>> Tim
Welke & John
Hirschbeck's crews tied to lead all of baseball in ejection activity.
>> Most ejections occurred in the
7th inning; Ejections from 7th and on comprised
50% of all tosses.
>> Most ejections occurred on
Sundays. Weekend series (Fri-Sun) featured
48% of all heave-ho's.
>> The most common reason for ejection was
Balls/Strikes, followed by arguing a
Check Swing.
Summary, Replay Reviews.
>>
687 Total Replay Reviews, of which calls were affirmed
53% of the time (47% overturned).
>> The
Tampa Bay Rays used replay more than any other team, but were the 2nd least accurate (LA).
>> Manager Kevin
Cash (TB) led all managers in filing challenges, but was fairly inaccurate.
>> Don
Mattingly (LAD) and
Cash (TB) were the league's worst challenging managers (lowest CSP).
>> Chip
Hale (ARI) led the league in accuracy.
>> The league average manager was successful in challenging a play
49% of the time.
>> Umpires
Baker and
Bucknor saw at least 15 of their calls reviewed, each, more than any other umpire.
>> John
Hirschbeck's crew led all of baseball in replay activity by a significant margin.
>> Umpire Alfonso
Marquez led the league in accuracy with all of his calls affirmed by replay.
>> Umpire Paul
Nauert experienced the highest rate of his calls being overturned by replay.
>> Most reviews occurred in the
8th inning. Reviews from 7th and on comprised
41% of all reviews.
>> Most reviews occurred on
Sundays; Calls were most often overturned in
daytime conditions.
>> The most common reason for review was
Safe/Out, followed by
HR/Not HR and
HBP/Foul.
For detailed sabermetric analysis of MLB umpire ejections and instant replay review outcomes, follow the "read more" link below. The advanced data below includes team and individual (by manager/player/umpire) ejection and replay review leaders and statistics, including manager's challenges and crew chief reviews. Complete listed ranking of least and most successful managers in challenging, most successful teams (manager's challenges + crew chief reviews) and review percentages by umpire are included.