Umpire Ratings

2025 season accuracy ratings based on Statcast pitch tracking data. Methodology

Umpires Tracked

League Accuracy

93.2%

Best

94.99%

James Jean

Worst

90.91%

David Arrieta

15+ games

#	Grade	NameName	GamesG	AccuracyAcc↓	Missed/GM/G	L-R GapL-R	Favor/GFav/G	HiLev AccHiLev	O/U LeanO/U
1	A+	James Jean	23	95.0%	7.6	+1.6	-0.135A	—	Neutral
2	A+	Derek Thomas	25	95.0%	7.5	+0.1	-0.019	—	Neutral
3	A+	Junior Valentine	23	94.8%	8.1	-0.2	-0.048A	—	Neutral
4	A	Shane Livensparger	30	94.5%	8.2	+1.9	-0.026A	—	Neutral
5	A	Quinn Wolcott	33	94.5%	8.2	0.0	+0.048H	—	Neutral
6	A	Nate Tomlinson	28	94.5%	8.6	+0.5	-0.003	—	Neutral
7	A	Scott Barry	29	94.4%	8.5	+0.5	-0.055A	—	Over
8	A	Edwin Jimenez	26	94.4%	8.2	-0.9	+0.256H	—	Neutral
9	A	Willie Traynor	15	94.4%	8.9	+0.4	+0.086H	—	Over
10	A	Dan Merzel	28	94.3%	8.4	+0.9	-0.182A	—	Neutral
11	A	Will Little	31	94.2%	8.7	0.0	+0.035H	—	Under
12	A	Alan Porter	32	94.2%	9.0	+0.5	-0.046A	—	Neutral
13	A	Nic Lentz	32	94.2%	8.8	+1.1	-0.012	—	Over
14	A	John Libka	32	94.2%	8.7	+0.5	+0.016	—	Neutral
15	A	Mark Wegner	31	94.2%	9.3	+1.3	+0.004	—	Over
16	A	Erich Bacchus	30	94.1%	8.9	+0.4	-0.029A	—	Over
17	B+	James Hoye	31	94.1%	8.7	+2.4	+0.156H	—	Neutral
18	B+	Austin Jones	29	94.1%	8.9	+0.3	-0.067A	—	Neutral
19	B+	Lance Barksdale	33	94.1%	9.5	+0.2	+0.002	—	Over
20	B+	Edwin Moscoso	32	94.0%	8.9	+1.8	+0.112H	—	Neutral
21	B+	Jacob Metz	19	94.0%	9.1	+2.6	+0.153H	—	Neutral
22	B+	Manny Gonzalez	24	93.9%	9.4	+3.1	+0.138H	—	Neutral
23	B+	Alex MacKay	28	93.7%	9.5	+1.2	-0.192A	—	Neutral
24	B+	Brock Ballou	24	93.7%	10.0	-1.0	+0.019	—	Neutral
25	B	Alfonso Márquez	32	93.7%	10.0	+1.7	+0.056H	—	Over
26	B	Adam Beck	33	93.6%	9.5	+1.5	+0.051H	—	Neutral
27	B	Adam Hamari	32	93.6%	9.5	+1.1	+0.130H	—	Neutral
28	B	Nestor Ceja	30	93.6%	9.9	+0.8	+0.190H	—	Neutral
29	B	Chris Segal	29	93.6%	9.3	+1.8	-0.108A	—	Neutral
30	B	Charlie Ramos	28	93.6%	9.6	-0.7	+0.084H	—	Neutral
31	B	Jansen Visconti	31	93.5%	10.0	+0.5	+0.067H	—	Neutral
32	B	Carlos Torres	30	93.4%	10.1	+1.7	-0.032A	—	Over
33	B	Chris Conroy	31	93.4%	10.4	+0.5	-0.081A	—	Neutral
34	B	Todd Tichenor	30	93.4%	9.5	+1.4	-0.082A	—	Over
35	B	Chris Guccione	31	93.4%	10.0	+0.2	-0.138A	—	Neutral
36	B	Tripp Gibson	27	93.3%	10.4	+1.8	+0.174H	—	Neutral
37	B	Brennan Miller	31	93.3%	10.0	+1.2	+0.127H	—	Neutral
38	B	John Tumpane	30	93.3%	10.0	+1.0	+0.018	—	Neutral
39	B	Clint Vondrak	30	93.3%	10.4	+2.1	-0.017	—	Over
40	B	Mark Ripperger	33	93.3%	9.5	+3.0	+0.013	—	Neutral
41	B	Alex Tosi	31	93.2%	10.2	+0.4	+0.012	—	Under
42	B	D.J. Reyburn	32	93.2%	10.0	+2.0	-0.011	—	Neutral
43	B	Malachi Moore	30	93.2%	10.7	0.0	+0.127H	—	Neutral
44	B	Ben May	31	93.1%	10.4	+0.5	+0.029H	—	Neutral
45	B	Jordan Baker	32	93.1%	10.3	+0.7	+0.101H	—	Neutral
46	B	Ryan Additon	29	93.1%	11.0	+0.1	+0.007	—	Neutral
47	B	Roberto Ortiz	28	93.1%	10.5	+1.3	+0.152H	—	Neutral
48	B	Cory Blaser	30	93.1%	10.1	+1.8	-0.034A	—	Neutral
49	B	David Rackley	31	93.1%	10.4	+0.5	+0.028H	—	Neutral
50	B	Sean Barber	30	93.1%	10.7	+0.7	+0.082H	—	Neutral
51	B	Jim Wolf	30	93.0%	10.6	+2.0	+0.043H	—	Neutral
52	C+	Lance Barrett	32	93.0%	10.9	+0.6	-0.112A	—	Neutral
53	C+	Paul Clemons	29	93.0%	10.4	-0.6	-0.046A	—	Neutral
54	C+	Tom Hanahan	28	93.0%	10.7	+2.4	-0.151A	—	Over
55	C+	Stu Scheurwater	30	93.0%	10.8	+1.2	+0.095H	—	Neutral
56	C+	Dan Bellino	29	92.9%	11.3	+0.9	-0.099A	—	Neutral
57	C+	Chad Whitson	20	92.9%	10.7	+2.5	+0.021H	—	Neutral
58	C+	Chad Fairchild	26	92.9%	10.7	+1.6	+0.045H	—	Neutral
59	C+	Brian Walsh	32	92.9%	11.2	+1.5	+0.044H	—	Neutral
60	C+	Phil Cuzzi	31	92.9%	10.5	+0.6	+0.058H	—	Neutral
61	C+	Emil Jimenez	29	92.8%	10.5	+0.1	+0.101H	—	Under
62	C+	Jeremie Rehak	28	92.8%	10.7	+0.9	+0.080H	—	Under
63	C+	Ryan Blakney	29	92.8%	11.1	+2.7	+0.024H	—	Under
64	C+	Ryan Wills	29	92.7%	11.7	+1.6	-0.046A	—	Neutral
65	C+	Adrian Johnson	34	92.6%	11.0	-0.8	-0.068A	—	Neutral
66	C+	Bill Miller	31	92.6%	11.4	+0.9	-0.010	—	Neutral
67	C+	Tony Randazzo	27	92.6%	11.1	+0.1	+0.114H	—	Neutral
68	C	Nick Mahrley	31	92.5%	11.2	+1.2	+0.075H	—	Neutral
69	C	Marvin Hudson	27	92.5%	11.7	+3.2	+0.128H	—	Neutral
70	C	Gabe Morales	33	92.4%	11.7	-0.9	+0.147H	—	Under
71	C	CB Bucknor	28	92.4%	11.9	+1.5	+0.059H	—	Over
72	C	Doug Eddings	34	92.3%	11.6	+0.5	+0.122H	—	Neutral
73	C	Brian O'Nora	29	92.3%	11.4	+0.5	-0.006	—	Neutral
74	C	Dan Iassogna	30	92.2%	11.6	-0.5	-0.042A	—	Neutral
75	C	John Bacon	31	92.2%	11.5	+0.8	-0.080A	—	Under
76	C	Andy Fletcher	29	92.2%	12.6	+3.3	+0.085H	—	Over
77	D	Mike Estabrook	31	92.1%	11.5	+0.8	-0.040A	—	Neutral
78	D	Ramon De Jesus	31	92.0%	12.3	+1.5	+0.046H	—	Neutral
79	D	Bruce Dreckman	24	92.0%	12.2	+2.0	-0.292A	—	Neutral
80	F	Laz Diaz	31	91.6%	12.7	+1.3	-0.184A	—	Neutral
81	F	Mike Muchlinski	30	91.5%	13.0	+0.9	+0.179H	—	Neutral
82	F	Vic Carapazza	32	91.4%	13.1	+0.5	+0.146H	—	Under
83	F	Ron Kulpa	23	91.3%	13.0	+2.3	+0.054H	—	Under

Accuracy — % of called pitches graded correct by StatcastMissed/G — missed calls per gameL-R Gap — batter handedness accuracy gap (+better vs lefties / −better vs righties)P L-R Gap — pitcher handedness accuracy gap (+better vs LHP / −better vs RHP)Favor/G — avg run favor per game toward home or awayHiLev Acc — accuracy on high-leverage pitches (LI ≥ 2)O/U Lean — Under = wide zone (more Ks), Over = tight zone (more walks)Grade — era-relative (A+ to F based on season peer accuracy)