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MLB ABS Challenge Analytics

Joined February 2026
Photo by TapToChallenge (@TapToChallenge)Photo by TapToChallenge (@TapToChallenge)Photo by TapToChallenge (@TapToChallenge)Photo by TapToChallenge (@TapToChallenge)Photo by TapToChallenge (@TapToChallenge)Photo by TapToChallenge (@TapToChallenge)Photo by TapToChallenge (@TapToChallenge)Photo by TapToChallenge (@TapToChallenge)Photo by TapToChallenge (@TapToChallenge)Photo by TapToChallenge (@TapToChallenge)
I made a database and website that tracks MLB ABS Challenges and associates run & win values to each play. Data is also aggregated at the game, player, team, and umpire level. Check it out at taptochallenge.com #MLB #ABS #WorldBaseballClassic #WBC #wbcsemifinal #roboumps
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6 notable ABS relevant plays from the first half of 2026:
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I joined @MarkASimonSays on the @sis_baseball podcast last week to talk all things #MLB ABS Challenge. Check it out anywhere you listen to podcasts - here is a link to Spotify: open.spotify.com/episode/6Aa…
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I think these will stop happening when the signal becomes a helmet tap and a verbal "challenge"
Umpire completely missed Jasson Dominguez tapping his helmet on a clearly wrong call. Dominguez wasn't allowed to challenge because it isn't reviewable
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TapToChallenge retweeted
New Article: All The Small Things letters2aj.substack.com/p/al… -ABS Challenge Strategy -A new Padres (and MLB) record -A new Metric: CRY
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TapToChallenge retweeted
First reaction to ABS Challenge was no big thing business as usual. IMO when everything is said & done it’s going to a lot bigger/more important than we 1st thought. Consider the following; 1) The RE(Run Expectancy) is calculated using the following 3 game states( 3 outs x 8 base states x 12 counts) which adds up to 288 different # of expected runs. 2) To get a Win Expectancy you have to factor in 9 innings, the top or bottom of the inning & 21 different score differentials. That leaves you with 108,864 distinct game states, each with a win a win probability for each team. 3) All pretty complicated. Let’s just say that each successful challenge irrespective of game states is worth 0.181 runs. 4) Going in to games catcher/hitters have a decent idea of where umpires lose & win challenges. Now you have to be aware of the game states. Maybe you color code it from the dugout or 3B coach(Thumb up,down or sideways) before each pitch. Red no challenge/Yellow 50/50/Green when in doubt go for it. I TRULY BELIEVE THAT AT THE END OF THE SEASON THE TEAMS THAT MANAGE THIS THE BEST WILL GAIN A DISTINCT ADVANTAGE. If this subject interests you, there is an excellent site taptochallenge.com that covers this in extreme detail.
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ABS Challenge Scorecard ATL 4 @ SEA 5 ATL: 0 for 2 | -0.179 Runs | -1.8% Win SEA: 1 for 1 | +0.090 Runs | +1.6% Win taptochallenge.com/games/823… #BravesCountry #TridentsUp #MLB #ABS #Roboumps
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ABS Challenge Scorecard ATL 3 @ SEA 2 ATL: 1 for 2 | +0.148 Runs | +1.4% Win SEA: 0 for 1 | -0.021 Runs | -0.2% Win taptochallenge.com/games/823… #BravesCountry #TridentsUp #MLB #ABS #Roboumps
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ABS Challenge Scorecard TOR 3 @ TB 4 TOR: 1 for 3 | -0.105 Runs | -0.8% Win TB: 1 for 2 | +0.300 Runs | +3.1% Win taptochallenge.com/games/822… #BlueJays50 #RaysUp #MLB #ABS #Roboumps
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ABS Challenge Scorecard MIN 11 @ WSH 3 MIN: 1 for 1 | +0.143 Runs | +1.3% Win WSH: 0 for 1 | -0.021 Runs | -0.0% Win taptochallenge.com/games/822… #NoPlaceLikeHERE #Natitude #MLB #ABS #Roboumps
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ABS Challenge Scorecard ATL 4 @ SEA 5 ATL: 0 for 2 | -0.179 Runs | -1.8% Win SEA: 1 for 1 | +0.090 Runs | +1.6% Win taptochallenge.com/games/823… #BravesCountry #TridentsUp #MLB #ABS #Roboumps
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ABS Challenge Scorecard MIL 3 @ STL 6 MIL: 1 for 2 | +0.102 Runs | +0.7% Win STL: 1 for 2 | +0.207 Runs | +2.3% Win taptochallenge.com/games/823… #ThisIsMyCrew #STLCards #MLB #ABS #Roboumps
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ABS Challenge Scorecard TOR 1 @ TB 5 TOR: 1 for 1 | +0.098 Runs | +0.6% Win TB: 0 for 1 | -0.014 Runs | -0.1% Win taptochallenge.com/games/822… #BlueJays50 #RaysUp #MLB #ABS #Roboumps
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ABS Challenge Scorecard CLE 1 @ ATH 7 CLE: 0 for 1 | -0.055 Runs | -0.6% Win ATH: 2 for 3 | +0.152 Runs | +1.6% Win taptochallenge.com/games/825… #GuardsBall #Athletics #MLB #ABS #Roboumps
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