Latest from the Blog
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%2373/4452 W
Role
Sort
| # | Player | Team | W/C | Win% | Net RE | Net WPA | CDQ |
|---|---|---|---|---|---|---|---|
| 4 |  Carson Kelly | CHC | 29/35 | 83% | +6.62 | +0.585 | +12.67 |
| 5 |  Drake Baldwin | ATL | 21/28 | 75% | +3.34 | +0.219 | +12.09 |
| 6 |  Victor Caratini | MIN | 37/55 | 67% | +5.40 | +0.519 | +10.44 |
| 7 |  Miguel Amaya | CHC | 25/40 | 63% | +2.53 | +0.180 | +9.65 |
| 8 |  Gabriel Moreno | AZ | 25/37 | 68% | +2.28 | +0.288 | +9.07 |
| 9 |  Iván Herrera | STL | 25/40 | 63% | +5.01 | +0.588 | +8.83 |
| 10 |  Austin Wells | NYY | 30/50 | 60% | +3.91 | +0.250 | +7.56 |
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
- Ump Miss
Stu Scheurwater called a strike on a pitch 4.1 inches outside the zone against batter Spencer Horwitz in the bottom of the 9th6/14
- 6+ Challenges
MIN attempted 6 challenges in their game against STL6/14
- Missed Opp
Chase Meidroth missed a chance to overturn a strike to a ball in the bottom of the 5th against LAD for 0.62 Runs and 9.0% Win Probability6/14
- Big Overturn
James Outman overturned a strike to a ball in the top of the 9th against CLE for 0.62 Runs and 11.7% Win Probability6/13
- Missed Opp
- 10+ Win%
- Big Overturn
Tyler Stephenson overturned a ball to a strike in the top of the 8th against AZ for 0.58 Runs and 10.8% Win Probability6/12
- Ump Miss
Ben May called a strike on a pitch 4.6 inches outside the zone against batter Ty France in the top of the 8th6/12
- 6+ Challenges
NYY attempted 6 challenges in their game against TOR6/12
- 6+ Challenges
- Missed Opp
Blaze Jordan missed a chance to overturn a strike to a ball in the top of the 7th against MIN for 0.96 Runs and 16.8% Win Probability6/12
- 1.5+ Runs
- 10+ Win%
- 10+ Win%
SF gained 14.8% Win Probability from challenges in their game against CHC6/12
- 10+ Win%
- 10+ Win%
TEX gained 11.1% Win Probability from challenges in their game against KC6/11
- Big Overturn
Sandy León overturned a ball to a strike in the bottom of the 9th against CWS for 0.62 Runs and 12.8% Win Probability6/9
- 6+ Challenges
- 6+ Challenges
- Missed Opp
Mitch Garver missed a chance to overturn a ball to a strike in the bottom of the 1st against BAL for 1.12 Runs and 10.2% Win Probability6/9
- Missed Opp
Jose Altuve missed a chance to overturn a strike to a ball in the top of the 3rd against LAA for 1.12 Runs and 3.5% Win Probability6/9
- 10+ Win%