TapToChallenge - MLB ABS Challenge Analytics

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Measuring ABS Decision Quality

Evaluating each pitch based on its likelihood to be challenged gives us insight into who is tapping at the right time

Nate Burke · Apr 4, 2026

Leaderboard

53.3%1412/2648 W

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Edgar QueroCWS+5.95Net RE 2

Carson KellyCHC+5.43Net RE 3

Ryan JeffersMIN+5.39Net RE

#	Player	Team	W/C	Win%	Net RE	Net WPA
4	Cal Raleigh	SEA	20/34	59%	+5.02	+0.456
5	Will Smith	LAD	29/39	74%	+4.97	+0.516
6	William Contreras	MIL	30/53	57%	+4.49	+0.525
7	Hunter Goodman	COL	24/39	62%	+4.39	+0.480
8	Salvador Perez	KC	22/30	73%	+4.12	+0.418
9	Pedro Pagés	STL	18/28	64%	+4.09	+0.333
10	Logan O'Hoppe	LAA	18/29	62%	+3.90	+0.473

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League Challenge Trends

Average Challenge Inning

7 day rolling avg of each team's first challenge per game

Average:

Challenge:

Team:

Outcome:

League

Recent Activity

Notable events from the last 7 days

Missed OppChandler Simpson missed a chance to overturn a strike to a ball in the top of the 8th against TOR for 0.96 Runs and 7.9% Win Probability5/13
10+ Win%CHC gained 13.9% Win Probability from challenges in their game against ATL5/13
10+ Win%CIN gained 10.8% Win Probability from challenges in their game against WSH5/13
Ump MissQuinn Wolcott called a ball on a pitch 5.2 inches inside the zone against pitcher Luis García in the bottom of the 8th5/10
10+ Win%MIN gained 17.2% Win Probability from challenges in their game against CLE5/10
10+ Win%NYY gained 12.4% Win Probability from challenges in their game against MIL5/10
10+ Win%ATH gained 11.6% Win Probability from challenges in their game against BAL5/10
Ump MissJansen Visconti called a strike on a pitch 4.7 inches outside the zone against batter Masyn Winn in the top of the 9th5/9
Big OverturnVaughn Grissom overturned a strike to a ball in the top of the 4th against TOR for 1.12 Runs and 12.5% Win Probability5/9
10+ Win%LAA gained 12.5% Win Probability from challenges in their game against TOR5/9
Big OverturnBobby Witt Jr. overturned a strike to a ball in the bottom of the 8th against DET for 0.96 Runs and 15.1% Win Probability5/8
Ump MissMike Estabrook called a ball on a pitch 5.1 inches inside the zone against pitcher Reid Detmers in the bottom of the 2nd5/8
Missed OppRyan Jeffers missed a chance to overturn a strike to a ball in the top of the 7th against CLE for 0.60 Runs and 10.9% Win Probability5/8
Missed OppShea Langeliers missed a chance to overturn a ball to a strike in the bottom of the 9th against BAL for 0.38 Runs and 8.2% Win Probability5/8
10+ Win%KC gained 14.8% Win Probability from challenges in their game against DET5/8