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Umpires
Umpire stats related to ABS challenges
2026
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Postseason
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Accuracy
Challenges
Impact
Call Context
#
Umpire
Called
Total Called Pitches
Correct
Correct Calls
Missed
Incorrect Calls
Acc%
▼
Overall Accuracy (Correct / Total)
Avg Miss (in.)
Avg Distance to Zone Edge on Incorrect Calls (inches)
Bad S
Incorrect Called Strikes (ball called strike)
Bad B
Incorrect Balls (strike called ball)
xAcc%
Accuracy an average umpire would achieve on this umpire's pitch mix.
AOE
Actual accuracy minus xAcc%. Difficulty adjusted umpire skill.
Chall
ABS Challenges Faced
OT
Challenges Overturned
OT%
Overturn Rate
xChall
Expected Challenges Faced (sum of xChall% across all called pitches)
COE
Challenges Over Expected (actual challenges − expected challenges)
COE/P
Challenges Over Expected per Called Pitch
OT RE
Total RE Given Up on Overturned Challenges
OT WPA
Total WPA Given Up on Overturned Challenges
Upheld Cost RE
Total RE Cost to Teams on Upheld Challenges
Upheld Cost WPA
Total WPA Cost to Teams on Upheld Challenges
Call LI
Avg Call Leverage Index on Challenged Pitches
xChall%
Avg Expected Challenge % on Challenged Pitches
cBE%
Avg Challenge Breakeven %
acBE%
Avg Adjusted Challenge Breakeven % (timing-adjusted)
1
Dan Merzel
115
112
3
97.4%
2.00
2
1
95.5%
+1.9%
3
2
66.7%
1.95
+1.05
+0.0091
0.217
0.024
0.027
0.003
0.72
15.0%
65.3%
34.1%
2
Ramon De Jesus
134
130
4
97.0%
1.21
2
2
95.9%
+1.1%
4
2
50.0%
1.49
+2.51
+0.0188
0.197
0.009
0.029
0.000
0.15
13.7%
58.2%
16.2%
3
Gabe Morales
166
161
5
97.0%
1.09
3
2
95.1%
+1.9%
2
0
0.0%
2.88
-0.88
-0.0053
0.000
0.000
0.078
0.007
0.81
14.4%
61.3%
25.8%
4
Nate Tomlinson
149
144
5
96.6%
0.81
3
2
93.7%
+2.9%
3
2
66.7%
3.16
-0.16
-0.0010
1.148
0.097
0.002
0.000
2.12
37.3%
38.2%
8.8%
5
Tripp Gibson
145
140
5
96.5%
0.90
3
2
93.7%
+2.9%
2
0
0.0%
2.97
-0.97
-0.0067
0.000
0.000
0.054
0.005
0.96
16.6%
65.9%
23.1%
6
Alex Tosi
172
166
6
96.5%
0.65
4
2
95.3%
+1.2%
6
3
50.0%
3.07
+2.93
+0.0170
0.325
0.019
0.032
0.003
0.94
21.5%
48.0%
14.9%
7
Nick Mahrley
154
148
6
96.1%
1.31
4
2
93.3%
+2.8%
4
2
50.0%
4.19
-0.19
-0.0012
0.202
0.028
0.074
0.008
1.16
21.9%
61.3%
33.6%
8
Nic Lentz
152
146
6
96.0%
1.06
1
5
94.9%
+1.2%
2
0
0.0%
2.45
-0.45
-0.0030
0.000
0.000
0.105
0.010
1.55
8.1%
43.7%
20.2%
9
James Hoye
153
146
7
95.4%
0.42
4
3
93.9%
+1.5%
2
0
0.0%
3.92
-1.92
-0.0125
0.000
0.000
0.075
0.007
0.92
14.1%
49.9%
16.3%
10
Mark Ripperger
148
141
7
95.3%
0.91
5
2
93.4%
+1.9%
3
2
66.7%
3.10
-0.10
-0.0007
0.394
0.013
0.009
0.000
0.46
21.8%
54.3%
16.6%
11
Alfonso Márquez
147
140
7
95.2%
1.20
2
5
93.2%
+2.0%
6
2
33.3%
4.08
+1.92
+0.0131
0.262
0.031
0.138
0.014
2.94
14.2%
59.5%
29.8%
12
Erich Bacchus
160
152
8
95.0%
0.87
4
4
94.1%
+0.9%
4
1
25.0%
3.41
+0.59
+0.0037
0.160
0.015
0.205
0.018
1.99
29.6%
40.1%
24.8%
13
Dan Bellino
119
113
6
95.0%
1.28
5
1
94.5%
+0.4%
4
2
50.0%
2.94
+1.06
+0.0089
0.918
0.143
0.044
0.004
3.17
28.9%
45.9%
7.9%
14
Scott Barry
136
129
7
94.8%
1.07
2
5
93.3%
+1.6%
2
1
50.0%
3.87
-1.87
-0.0138
0.051
0.005
0.039
0.004
0.45
19.4%
73.7%
39.5%
15
Alex MacKay
159
150
9
94.3%
0.71
2
7
93.4%
+1.0%
6
4
66.7%
3.82
+2.18
+0.0137
0.403
0.027
0.002
0.000
0.66
15.5%
64.2%
10.6%
16
Shane Livensparger
120
113
7
94.2%
1.47
3
4
94.9%
-0.7%
6
5
83.3%
3.09
+2.91
+0.0242
0.581
0.074
0.001
0.000
0.98
17.6%
70.3%
13.3%
17
Todd Tichenor
175
164
11
93.7%
0.97
4
7
93.8%
-0.1%
7
4
57.1%
2.97
+4.03
+0.0231
0.641
0.041
0.152
0.016
0.70
21.1%
62.0%
11.2%
18
Jansen Visconti
199
186
13
93.5%
0.91
7
6
94.3%
-0.9%
7
4
57.1%
3.99
+3.01
+0.0151
0.538
0.053
0.068
0.006
1.49
13.5%
52.2%
18.7%
19
Chris Guccione
179
166
13
92.7%
0.74
8
5
94.2%
-1.5%
5
4
80.0%
4.53
+0.47
+0.0026
0.878
0.112
0.003
0.000
2.24
26.6%
46.4%
7.0%
20
Adam Beck
142
129
13
90.8%
0.93
6
7
92.3%
-1.4%
10
7
70.0%
5.13
+4.87
+0.0343
0.973
0.214
0.007
0.001
3.14
25.8%
57.9%
13.6%
21
Cory Blaser
156
141
15
90.4%
1.37
7
8
91.6%
-1.2%
5
4
80.0%
6.94
-1.94
-0.0125
0.319
0.032
0.033
0.003
0.60
30.1%
68.9%
27.0%
22
Roberto Ortiz
154
139
15
90.3%
1.65
11
4
94.6%
-4.3%
9
6
66.7%
5.62
+3.38
+0.0219
0.655
0.058
0.074
0.007
0.71
30.3%
63.9%
26.6%
23
Jeremie Rehak
122
109
13
89.3%
0.69
8
5
94.3%
-4.9%
2
2
100.0%
3.36
-1.36
-0.0111
0.274
0.024
0.000
0.000
0.79
25.2%
57.8%
0.9%
24
Lance Barrett
164
146
18
89.0%
1.20
11
7
93.5%
-4.4%
12
10
83.3%
5.70
+6.30
+0.0384
1.116
0.180
0.009
0.001
1.41
23.8%
62.1%
14.3%
