Rounding the Bases...
Rounding the Bases...
ABS challenge rankings across the active MLB umpire pool, highlighting which umpires look steady, volatile, or high-risk in the review sample.
Umpire Overturn Rates
Volatile Lately
Recent Movement
Scott Barry
OT rate down · 19.9 pts
Recent sample is settling lower than season baseline.
Malachi Moore
OT rate up · 19.6 pts
Recent sample is running hotter than season baseline.
Thomas Fornarola
OT rate down · 19.0 pts
Recent sample is settling lower than season baseline.
John Tumpane
OT rate up · 18.8 pts
Recent sample is running hotter than season baseline.
Default Sort
Qualified samples first, then the umpires with the most challenge evidence.
Laz Diaz
Qualified
OT Rate
58.4%
Challenges
Games
Volatility
Read
Chris Guccione
Qualified
OT Rate
51.8%
Challenges
Games
Volatility
Read
Manny Gonzalez
Qualified
OT Rate
65.1%
Challenges
Games
Volatility
Read
Nic Lentz
Qualified
OT Rate
43.8%
Challenges
Games
Volatility
Read
Lance Barrett
Qualified
OT Rate
61.3%
Challenges
Games
Volatility
Read
Derek Thomas
Qualified
OT Rate
44.3%
Challenges
Games
Volatility
Read
Adam Beck
Qualified
OT Rate
45.6%
Challenges
Games
Volatility
Read
James Jean
Qualified
OT Rate
46.8%
Challenges
Games
Volatility
Read
Mike Estabrook
Qualified
OT Rate
58.2%
Challenges
Games
Volatility
Read
Tom Hanahan
Qualified
OT Rate
48.7%
Challenges
Games
Volatility
Read
| 01Laz DiazQualified | 89 | 58.4% | Moderate | Watchful | 18 |
| 02Chris GuccioneQualified | 83 | 51.8% | Moderate | Watchful | 18 |
| 03Manny GonzalezQualified | 83 | 65.1% | Elevated | Volatile | 16 |
| 04Nic LentzQualified | 80 | 43.8% | Moderate | Watchful | 18 |
| 05Lance BarrettQualified | 80 | 61.3% | Moderate | Volatile | 17 |
| 06Derek ThomasQualified | 79 | 44.3% | Moderate | Watchful | 16 |
| 07Adam BeckQualified | 79 | 45.6% | Moderate | Watchful | 18 |
| 08James JeanQualified | 79 | 46.8% | Moderate | Watchful | 21 |
| 09Mike EstabrookQualified | 79 | 58.2% | Moderate | Watchful | 17 |
| 10Tom HanahanQualified | 78 | 48.7% | Moderate | Watchful | 18 |