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Umpires
Per-umpire accuracy and ABS challenge stats
2026
▼
Regular Season
▼
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%
Expected accuracy: the accuracy an average umpire would have on this umpire's exact pitch mix, based on pitch location difficulty.
AOE
▼
Accuracy over expected: actual accuracy minus expected accuracy. Positive means the umpire is more accurate than average on their pitch mix.
Chall
ABS Challenges Faced
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
Challenges Overturned
OT%
Overturn Rate
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
James Hoye
141
135
6
95.7%
1.46
3
3
90.0%
+5.8%
1
3.46
-2.46
-0.0174
0
0.0%
0.000
0.000
0.000
0.000
0.25
17.9%
44.3%
0.0%
2
Mark Wegner
175
166
9
94.9%
1.76
7
2
92.1%
+2.8%
4
4.02
-0.02
-0.0001
3
75.0%
0.692
0.070
0.000
0.000
1.15
25.0%
47.2%
12.3%
3
Chris Conroy
171
160
11
93.6%
1.44
5
6
91.0%
+2.6%
3
3.85
-0.85
-0.0050
1
33.3%
0.089
0.014
0.000
0.000
0.59
16.9%
60.6%
0.0%
4
Lance Barksdale
148
140
8
94.6%
1.67
6
2
92.2%
+2.4%
2
4.04
-2.04
-0.0138
1
50.0%
0.206
0.028
0.033
0.004
1.45
19.4%
51.5%
10.4%
5
Alan Porter
166
157
9
94.6%
1.39
4
5
92.6%
+1.9%
3
3.21
-0.21
-0.0013
2
66.7%
0.325
0.021
0.000
0.000
0.47
16.0%
58.7%
6.3%
6
Alfonso Márquez
144
137
7
95.1%
1.67
4
3
93.5%
+1.7%
1
2.21
-1.21
-0.0084
1
100.0%
0.034
0.000
0.000
0.000
0.01
17.8%
84.1%
18.9%
7
Chris Guccione
144
134
10
93.1%
1.37
4
6
91.7%
+1.3%
3
2.49
+0.51
+0.0035
2
66.7%
0.222
0.021
0.000
0.000
1.24
9.3%
58.4%
0.0%
8
Bill Miller
136
123
13
90.4%
2.34
11
2
89.8%
+0.6%
1
3.49
-2.49
-0.0183
0
0.0%
0.000
0.000
0.023
0.001
0.11
3.8%
72.5%
25.2%
9
Andy Fletcher
143
131
12
91.6%
1.58
5
7
91.6%
+0.0%
1
3.87
-2.87
-0.0201
1
100.0%
0.114
0.011
0.000
0.000
0.74
29.6%
61.3%
32.8%
10
Laz Diaz
119
110
9
92.4%
2.09
4
5
93.7%
-1.2%
5
2.65
+2.35
+0.0197
3
60.0%
0.568
0.071
0.014
0.001
1.51
15.0%
49.3%
14.8%
11
Adrian Johnson
151
138
13
91.4%
1.61
7
6
93.2%
-1.8%
3
4.11
-1.11
-0.0074
2
66.7%
0.505
0.043
0.000
0.000
0.94
30.7%
53.5%
2.4%
12
Dan Iassogna
128
112
16
87.5%
1.78
9
7
91.0%
-3.5%
4
4.10
-0.10
-0.0008
3
75.0%
0.677
0.069
0.000
0.000
1.38
26.5%
56.0%
11.9%
