Automated Ball-Strike Challenge Tracker

2026 MLB Season

⚽
Teams
Team leaderboard with challenge stats, overturn rates, and opponent breakdowns
🥇
Players
Player leaderboard with challenge counts and overturn rates by position
👤
Umpires
Umpire accuracy rankings and challenge frequency per game
🏆
The Leaderboard and the Loserboard
Best and worst challengers — top and bottom players, teams, and umpires by overturn rate
🎯
Pitch Analysis
Strike zone plot, pitch type breakdowns, and distance-from-edge analysis
📊
Overview (In Progress)
Daily trends, challenge breakdowns by role, call type, and inning
💡
Other Ideas
Do umpires miss more calls on tall batters? Exploring height and the bottom of the zone

Daily Challenges

By Challenger Role

By Original Call

By Inning

Cumulative Challenges

Team Leaderboard

# Team Challenges Made Opponent Challenges
Total OT Conf OT% Total OT Conf OT%

Player Leaderboard

# Player Team Position Challenges Overturned OT%

Umpire Leaderboard

# Umpire Challenges Overturned Confirmed OT% Games Challenges / Game

By Pitch Type Group

By Pitch Type

Strike Zone — Challenge Locations

Distance from Zone Edge

The Leaderboard

Top Players

# Player Challenges OT%

Top Teams

# Team Challenges OT%

Most Accurate Umpires

# Umpire Challenges OT%

The Loserboard

Bottom Players

# Player Challenges OT%

Bottom Teams

# Team Challenges OT%

Least Accurate Umpires

# Umpire Challenges OT%

Worst Missed Calls (Overturned, farthest from zone)

# Date Game Inning Count Pitch MPH Call Umpire Challenger Dist

Worst Challenges (Confirmed, farthest from zone)

# Date Game Inning Count Pitch MPH Call Umpire Challenger Dist

Batter Height vs Umpire Overturn Rate

Do umpires miss more calls when a tall batter is at the plate?

Bottom-of-Zone Calls by Batter Height

Do umpires miss more calls below the zone to tall batters?

Overturn Rate Over Time: Short vs Tall Batters

Cumulative overturn rate for 5'9" & under vs 6'4"+ batters as the season progresses.