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 WilsonA95.3%±1.2
- 2Nate TomlinsonA-94.1%±0.7
- 3Alex TosiA-94.1%±0.8
- 4Mark RippergerA-94.1%±0.7
- 5Austin JonesA-94.1%±0.9
Roughest zones
- 1Jen PawolB-91.2%±1.3
- 2Malachi MooreB-91.2%±0.8
- 3Felix NeonB-91.6%±1.7
- 4Laz DiazB-91.6%±0.9
- 5Manny GonzalezB-91.6%±0.9
Wildest zone this week — PIT @ STL under Marvin Hudson, a 2.0-run swing toward STL.
Tap a column to sort.
| Vic Carapazzabio | 30 | B+93.0% | 0.74 | 55/108 · 50.9% |
| Willie Traynorbio | 29 | B92.3% | 0.56 | 59/107 · 55.1% |
| Adam Hamaribio | 28 | B+93.4% | 0.40 | 40/85 · 47.1% |
| Lance Barrettbio | 28 | B92.1% | 0.46 | 82/143 · 57.3% |
| Malachi Moorebio | 28 | B-91.2% | 0.62 | 79/140 · 56.4% |
| Nic Lentzbio | 28 | B92.5% | 0.63 | 56/119 · 47.1% |
| Quinn Wolcottbio | 28 | B+93.1% | 0.61 | 55/112 · 49.1% |
| Dan Bellinobio | 27 | B92.6% | 0.54 | 70/120 · 58.3% |
| Hunter Wendelstedtbio | 27 | B92.3% | 0.60 | 89/152 · 58.6% |
| Mark Rippergerbio | 27 | A-94.1% | 0.52 | 50/115 · 43.5% |
| Mike Muchlinskibio | 27 | B92.8% | 0.31 | 50/96 · 52.1% |
| Nate Tomlinsonbio | 27 | A-94.1% | 0.59 | 47/94 · 50.0% |
| Nestor Cejabio | 27 | B+93.8% | 0.51 | 52/110 · 47.3% |
| Alex Tosibio | 26 | A-94.1% | 0.36 | 48/100 · 48.0% |
| Bill Millerbio | 26 | B+93.1% | 0.57 | 70/117 · 59.8% |
| Brennan Millerbio | 26 | B92.4% | 0.58 | 60/109 · 55.0% |
| Dan Iassognabio | 26 | B92.4% | 0.57 | 79/126 · 62.7% |
| Doug Eddingsbio | 26 | B92.3% | 0.57 | 62/106 · 58.5% |
| Erich Bacchusbio | 26 | B+93.2% | 0.51 | 35/82 · 42.7% |
| Laz Diazbio | 26 | B-91.6% | 0.49 | 70/117 · 59.8% |
| Mark Wegnerbio | 26 | B+93.1% | 0.37 | 54/105 · 51.4% |
| Mike Estabrookbio | 26 | B-91.8% | 0.44 | 74/123 · 60.2% |
| Paul Clemonsbio | 26 | B92.3% | 0.51 | 56/101 · 55.4% |
| Rob Drakebio | 26 | B92.5% | 0.56 | 61/99 · 61.6% |
| Tripp Gibsonbio | 26 | B+93.4% | 0.56 | 54/106 · 50.9% |
| Will Littlebio | 26 | B+93.5% | 0.54 | 56/117 · 47.9% |
| Adam Beckbio | 25 | B+93.0% | 0.60 | 56/113 · 49.6% |
| Alfonso Márquezbio | 25 | B92.4% | 0.59 | 68/123 · 55.3% |
| Brian Walshbio | 25 | B92.7% | 0.45 | 69/119 · 58.0% |
| Bruce Dreckmanbio | 25 | B-91.7% | 0.47 | 64/109 · 58.7% |
| Chad Fairchildbio | 25 | B92.6% | 0.53 | 53/101 · 52.5% |
| Chris Guccionebio | 25 | B92.9% | 0.51 | 66/119 · 55.5% |
| Chris Segalbio | 25 | B92.3% | 0.60 | 70/115 · 60.9% |
| Clint Vondrakbio | 25 | B92.5% | 0.65 | 56/97 · 57.7% |
| Dan Merzelbio | 25 | B+93.5% | 0.41 | 56/111 · 50.5% |
| Edwin Moscosobio | 25 | B+93.8% | 0.53 | 58/112 · 51.8% |
| Gabe Moralesbio | 25 | B+93.6% | 0.52 | 46/91 · 50.5% |
| John Tumpanebio | 25 | B+93.1% | 0.45 | 60/104 · 57.7% |
| Lance Barksdalebio | 25 | B92.6% | 0.62 | 62/109 · 56.9% |
| Manny Gonzalezbio | 25 | B-91.6% | 0.45 | 75/119 · 63.0% |
| Ryan Additonbio | 25 | B92.6% | 0.62 | 54/117 · 46.2% |
| Ryan Willsbio | 25 | B93.0% | 0.52 | 58/116 · 50.0% |
| Stu Scheurwaterbio | 25 | B-91.8% | 0.55 | 72/116 · 62.1% |
| Todd Tichenorbio | 25 | B92.8% | 0.49 | 54/91 · 59.3% |
| Tom Hanahanbio | 25 | B92.9% | 0.57 | 54/106 · 50.9% |
| Alan Porterbio | 24 | B92.9% | 0.57 | 62/116 · 53.4% |
| Carlos Torresbio | 24 | B-91.9% | 0.58 | 42/79 · 53.2% |
| Chad Whitsonbio | 24 | B92.5% | 0.53 | 57/98 · 58.2% |
| Chris Conroybio | 24 | B+93.5% | 0.54 | 49/97 · 50.5% |
| James Hoyebio | 24 | B+93.0% | 0.44 | 56/113 · 49.6% |
| Jansen Viscontibio | 24 | B+93.8% | 0.33 | 35/86 · 40.7% |
| Jim Wolfbio | 24 | B+93.2% | 0.61 | 63/117 · 53.8% |
| Jordan Bakerbio | 24 | B92.4% | 0.49 | 58/102 · 56.9% |
| Roberto Ortizbio | 24 | B92.6% | 0.64 | 65/105 · 61.9% |
| Scott Barrybio | 24 | B92.3% | 0.52 | 48/95 · 50.5% |
| Sean Barberbio | 24 | B-92.0% | 0.74 | 78/129 · 60.5% |
| Alex MacKaybio | 23 | B+93.5% | 0.47 | 57/103 · 55.3% |
| Ben Maybio | 23 | B92.9% | 0.53 | 46/83 · 55.4% |
| Cory Blaserbio | 23 | B+93.1% | 0.65 | 66/108 · 61.1% |
| D.J. Reyburnbio | 23 | B+93.2% | 0.56 | 47/100 · 47.0% |
| David Rackleybio | 23 | B92.8% | 0.43 | 41/91 · 45.1% |
| Emil Jimenezbio | 23 | B92.2% | 0.57 | 51/102 · 50.0% |
| John Libkabio | 23 | B+93.8% | 0.42 | 37/83 · 44.6% |
| Shane Livenspargerbio | 23 | B92.9% | 0.61 | 50/103 · 48.5% |
| James Jeanbio | 22 | B92.9% | 0.45 | 35/81 · 43.2% |
| Nick Mahrleybio | 22 | B-92.0% | 0.47 | 39/78 · 50.0% |
| Ramon De Jesusbio | 22 | B92.6% | 0.53 | 58/103 · 56.3% |
| Junior Valentinebio | 21 | B+93.7% | 0.47 | 43/80 · 53.7% |
| Marvin Hudsonbio | 21 | B92.7% | 0.54 | 48/81 · 59.3% |
| Adrian Johnsonbio | 20 | B-91.8% | 0.61 | 70/107 · 65.4% |
| Jeremie Rehakbio | 20 | B+93.2% | 0.37 | 45/89 · 50.6% |
| Ryan Blakneybio | 20 | B92.2% | 0.40 | 46/83 · 55.4% |
| Tyler Jonesbio | 20 | B+94.0% | 0.70 | 52/91 · 57.1% |
| Andy Fletcherbio | 19 | B92.3% | 0.53 | 67/97 · 69.1% |
| Charlie Ramosbio | 19 | B-92.0% | 0.59 | 61/104 · 58.7% |
| Dexter Kelleybio | 19 | B92.8% | 0.57 | 36/89 · 40.4% |
| Ron Kulpabio | 19 | B-91.9% | 0.55 | 50/90 · 55.6% |
| Austin Jonesbio | 18 | A-94.1% | 0.41 | 28/63 · 44.4% |
| Brock Balloubio | 18 | B92.7% | 0.69 | 50/88 · 56.8% |
| Derek Thomasbio | 17 | B+93.3% | 0.57 | 26/71 · 36.6% |
| Jacob Metzbio | 17 | B92.1% | 0.49 | 43/80 · 53.7% |
| Brian O'Norabio | 15 | B92.5% | 0.45 | 39/70 · 55.7% |
| Steven Jaschinskibio | 15 | B+93.4% | 0.50 | 26/64 · 40.6% |
| John Baconbio | 14 | B-91.7% | 0.66 | 43/76 · 56.6% |
| Jonathan Parrabio | 14 | B92.9% | 0.51 | 28/59 · 47.5% |
| Louie Krupabio | 14 | B+93.8% | 0.82 | 23/59 · 39.0% |
| Edwin Jimenezbio | 12 | B92.5% | 0.59 | 22/51 · 43.1% |
| Jen Pawolbio | 12 | B-91.2% | 0.56 | 36/60 · 60.0% |
| Dillon Wilson | 8 | A95.3% | 0.41 | 7/22 · 31.8% |
| Felix Neon | 7 | B-91.6% | 0.43 | 28/45 · 62.2% |
| CB Bucknor | 2 | B-91.6% | 0.73 | 7/9 · 77.8% |