Umpire Grade · Blue Notes
Nick Mahrley
16 games graded behind the plate.
Season Grade
93.3% avg
Avg Swing
runs / game
ABS Overturns
29/58 calls
Best game 98.5% · worst 89.0%. Grade is accuracy on taken pitches vs the rulebook zone; ABS is the Automated Ball-Strike System challenge record (how often the robots overruled him).
The games
| Game | Grade | Favor | ABS | Blue Note |
|---|---|---|---|---|
| MIA @ MIL2026-07-17 | C | 1.4 MIA | 3/5 | One side pitched to a slightly bigger plate. |
| KC @ BAL2026-07-10 | B+ | 0.2 KC | 0/1 | The kind of night where the umpire is the least of the story. |
| SD @ LAD2026-07-05 | C | 0.2 SD | 2/6 | The zone shrank when the pitchers needed it most. |
| SF @ AZ2026-07-01 | A | 0.1 SF | 0/1 | An honest evening's grade: nothing loud, nothing missed by much. |
| ATH @ LAA2026-06-27 | A- | 0.6 ATH | 3/3 | Solid and unspectacular — exactly what the job asks. |
| CLE @ CWS2026-06-22 | A- | 1.0 CWS | 3/7 | The kind of night where the umpire is the least of the story. |
| ATH @ HOU2026-06-05 | C+ | 1.7 HOU | 2/4 | The grade leaned — the ledger says which way. |
| ATL @ CIN2026-05-31 | B- | 0.2 ATL | 2/5 | The zone stretched its legs. |
| NYY @ KC2026-05-26 | B | 0.2 NYY | 1/2 | Solid and unspectacular — exactly what the job asks. |
| LAD @ MIL2026-05-22 | A- | 0.5 MIL | 0/2 | Reliable as a Tuesday: no complaints, no headlines. |
| AZ @ COL2026-05-17 | A- | 0.2 COL | 2/3 | Called a fair game and let the players decide it. |
| COL @ NYM2026-04-24 | B | 0.6 COL | 5/6 | Hawkeye did more talking than the umpire tonight. |
| CWS @ KC2026-04-12 | B | 0.9 KC | 1/2 | Called a fair game and let the players decide it. |
| SD @ PIT2026-04-08 | A+ | 0.4 PIT | 3/4 | Down the middle. Both dugouts had the same zone. |
| TB @ MIN2026-04-04 | B+ | 1.2 TB | 1/4 | Somebody's pitching staff sent a thank-you note. |
| WSH @ PHI2026-03-30 | A | 0.5 PHI | 1/3 | A steady night's work behind the plate. |