Umpire Grades
Every home-plate umpire we’ve graded, ranked by games worked. The grade is accuracy on taken pitches against the rulebook zone; swing is the average runs a game those misses moved; ABS is the Automated Ball-Strike System record — how often the robots overruled the call when one was challenged. Each umpire’s page is a live rollup of those Blue Notes.
Behind the Plate
Season grade · 90 umps, 5+ gamesBest zones
- 1Dillon WilsonA-94.5%±1.1
- 2Austin JonesA-94.2%±0.8
- 3Alex TosiA-94.2%±0.7
- 4Tyler JonesB+93.9%±0.8
- 5Nate TomlinsonB+93.9%±0.7
Roughest zones
- 1Malachi MooreB-91.2%±0.8
- 2Jen PawolB-91.4%±1.2
- 3Bruce DreckmanB-91.4%±0.8
- 4Felix NeonB-91.5%±1.6
- 5Laz DiazB-91.5%±0.8
Wildest zone, week of Sep 23 — MIL @ PHI under Dan Bellino, a 2.1-run swing toward PHI.
Tap a column to sort.
| Nic Lentzbio | 33 | B92.9% | 0.60 | 72/149 · 48.3% |
| Vic Carapazzabio | 33 | B+93.1% | 0.69 | 66/127 · 52.0% |
| Adam Hamaribio | 32 | B+93.3% | 0.41 | 54/110 · 49.1% |
| Dan Bellinobio | 32 | B92.5% | 0.55 | 85/142 · 59.9% |
| Lance Barrettbio | 32 | B92.3% | 0.44 | 94/160 · 58.8% |
| Nestor Cejabio | 32 | B+93.6% | 0.49 | 62/133 · 46.6% |
| Willie Traynorbio | 32 | B92.4% | 0.57 | 65/118 · 55.1% |
| Laz Diazbio | 31 | B-91.5% | 0.57 | 83/144 · 57.6% |
| Malachi Moorebio | 31 | B-91.2% | 0.59 | 89/153 · 58.2% |
| Mark Rippergerbio | 31 | B+93.8% | 0.49 | 58/131 · 44.3% |
| Mark Wegnerbio | 31 | B92.7% | 0.42 | 63/129 · 48.8% |
| Paul Clemonsbio | 31 | B92.1% | 0.47 | 64/122 · 52.5% |
| Quinn Wolcottbio | 31 | B+93.1% | 0.63 | 63/127 · 49.6% |
| Rob Drakebio | 31 | B92.5% | 0.52 | 82/127 · 64.6% |
| Stu Scheurwaterbio | 31 | B-91.8% | 0.54 | 88/148 · 59.5% |
| Alex Tosibio | 30 | A-94.2% | 0.37 | 53/113 · 46.9% |
| Brennan Millerbio | 30 | B92.2% | 0.56 | 71/131 · 54.2% |
| Clint Vondrakbio | 30 | B92.4% | 0.61 | 69/118 · 58.5% |
| Dan Iassognabio | 30 | B92.4% | 0.55 | 90/149 · 60.4% |
| Doug Eddingsbio | 30 | B92.3% | 0.55 | 73/126 · 57.9% |
| Edwin Moscosobio | 30 | B+93.6% | 0.53 | 68/130 · 52.3% |
| Erich Bacchusbio | 30 | B+93.0% | 0.52 | 45/99 · 45.5% |
| Hunter Wendelstedtbio | 30 | B92.3% | 0.55 | 98/167 · 58.7% |
| John Libkabio | 30 | B+93.7% | 0.46 | 53/109 · 48.6% |
| John Tumpanebio | 30 | B+93.2% | 0.46 | 73/127 · 57.5% |
| Mike Muchlinskibio | 30 | B92.8% | 0.31 | 57/108 · 52.8% |
| Nate Tomlinsonbio | 30 | B+93.9% | 0.60 | 54/106 · 50.9% |
| Ryan Additonbio | 30 | B92.7% | 0.55 | 63/140 · 45.0% |
| Sean Barberbio | 30 | B-92.0% | 0.70 | 91/155 · 58.7% |
| Todd Tichenorbio | 30 | B92.7% | 0.48 | 69/119 · 58.0% |
| Tripp Gibsonbio | 30 | B+93.5% | 0.59 | 61/121 · 50.4% |
| Will Littlebio | 30 | B+93.4% | 0.51 | 66/135 · 48.9% |
| Adam Beckbio | 29 | B93.0% | 0.58 | 66/129 · 51.2% |
| Alan Porterbio | 29 | B92.8% | 0.51 | 73/133 · 54.9% |
| Bill Millerbio | 29 | B92.8% | 0.60 | 82/135 · 60.7% |
| Carlos Torresbio | 29 | B-91.8% | 0.57 | 58/108 · 53.7% |
| Dan Merzelbio | 29 | B+93.4% | 0.44 | 70/135 · 51.9% |
| Gabe Moralesbio | 29 | B+93.8% | 0.51 | 54/106 · 50.9% |
| James Hoyebio | 29 | B92.9% | 0.42 | 79/151 · 52.3% |
| Jordan Bakerbio | 29 | B92.5% | 0.51 | 71/123 · 57.7% |
| Lance Barksdalebio | 29 | B92.5% | 0.58 | 72/128 · 56.2% |
| Manny Gonzalezbio | 29 | B-92.0% | 0.48 | 83/135 · 61.5% |
| Mike Estabrookbio | 29 | B-91.8% | 0.43 | 86/139 · 61.9% |
| Ryan Willsbio | 29 | B92.8% | 0.54 | 69/135 · 51.1% |
| Tom Hanahanbio | 29 | B92.9% | 0.56 | 66/125 · 52.8% |
| Alex MacKaybio | 28 | B+93.7% | 0.44 | 65/119 · 54.6% |
| Alfonso Márquezbio | 28 | B92.2% | 0.59 | 75/141 · 53.2% |
| Ben Maybio | 28 | B+93.1% | 0.54 | 56/107 · 52.3% |
| Brian Walshbio | 28 | B92.7% | 0.46 | 78/134 · 58.2% |
| Bruce Dreckmanbio | 28 | B-91.4% | 0.47 | 73/125 · 58.4% |
| Chad Fairchildbio | 28 | B92.4% | 0.54 | 56/111 · 50.5% |
| Chris Guccionebio | 28 | B92.8% | 0.50 | 70/130 · 53.8% |
| Chris Segalbio | 28 | B92.1% | 0.56 | 80/132 · 60.6% |
| Cory Blaserbio | 28 | B+93.3% | 0.62 | 81/127 · 63.8% |
| D.J. Reyburnbio | 28 | B+93.3% | 0.53 | 56/117 · 47.9% |
| David Rackleybio | 28 | B92.7% | 0.47 | 56/116 · 48.3% |
| Emil Jimenezbio | 28 | B92.3% | 0.55 | 59/119 · 49.6% |
| Jansen Viscontibio | 28 | B+93.8% | 0.33 | 43/102 · 42.2% |
| Jim Wolfbio | 28 | B+93.0% | 0.57 | 73/136 · 53.7% |
| Nick Mahrleybio | 28 | B-91.8% | 0.49 | 60/108 · 55.6% |
| Roberto Ortizbio | 28 | B92.6% | 0.58 | 73/123 · 59.3% |
| Scott Barrybio | 28 | B92.2% | 0.55 | 60/115 · 52.2% |
| Shane Livenspargerbio | 28 | B92.8% | 0.56 | 61/126 · 48.4% |
| James Jeanbio | 27 | B93.0% | 0.46 | 47/103 · 45.6% |
| Ramon De Jesusbio | 27 | B92.4% | 0.48 | 70/129 · 54.3% |
| Chad Whitsonbio | 26 | B92.7% | 0.50 | 60/106 · 56.6% |
| Junior Valentinebio | 26 | B+93.6% | 0.48 | 53/101 · 52.5% |
| Chris Conroybio | 25 | B+93.6% | 0.58 | 52/102 · 51.0% |
| Ryan Blakneybio | 25 | B92.4% | 0.41 | 60/113 · 53.1% |
| Andy Fletcherbio | 24 | B92.4% | 0.48 | 81/122 · 66.4% |
| Charlie Ramosbio | 24 | B92.1% | 0.60 | 74/123 · 60.2% |
| Jeremie Rehakbio | 24 | B+93.4% | 0.39 | 55/108 · 50.9% |
| Ron Kulpabio | 24 | B92.3% | 0.50 | 56/102 · 54.9% |
| Tyler Jonesbio | 24 | B+93.9% | 0.74 | 66/116 · 56.9% |
| Marvin Hudsonbio | 23 | B92.8% | 0.54 | 54/93 · 58.1% |
| Adrian Johnsonbio | 22 | B-91.7% | 0.64 | 73/114 · 64.0% |
| Brock Balloubio | 22 | B92.6% | 0.71 | 61/109 · 56.0% |
| Derek Thomasbio | 22 | B92.8% | 0.59 | 38/93 · 40.9% |
| Austin Jonesbio | 21 | A-94.2% | 0.44 | 35/75 · 46.7% |
| Dexter Kelleybio | 21 | B92.9% | 0.57 | 40/97 · 41.2% |
| Jacob Metzbio | 21 | B92.2% | 0.52 | 54/97 · 55.7% |
| Steven Jaschinskibio | 19 | B+93.8% | 0.51 | 31/78 · 39.7% |
| Edwin Jimenezbio | 18 | B92.1% | 0.56 | 40/82 · 48.8% |
| John Baconbio | 17 | B-91.6% | 0.69 | 53/94 · 56.4% |
| Louie Krupabio | 17 | B+93.7% | 0.72 | 30/69 · 43.5% |
| Jonathan Parrabio | 16 | B92.9% | 0.49 | 33/67 · 49.3% |
| Brian O'Norabio | 15 | B92.5% | 0.45 | 39/70 · 55.7% |
| Jen Pawolbio | 13 | B-91.4% | 0.54 | 37/63 · 58.7% |
| Dillon Wilson | 11 | A-94.5% | 0.34 | 11/31 · 35.5% |
| Felix Neon | 8 | B-91.5% | 0.47 | 30/49 · 61.2% |
| CB Bucknor | 2 | B-91.6% | 0.73 | 7/9 · 77.8% |