| Window | G | IP | ERA | WHIP | K | BB |
|---|---|---|---|---|---|---|
| Last 7 days | 2 | 1 | 0.00 | 2.25 | 1 | 0 |
| Last 30 days | 11 | 10 | 1.80 | 1.50 | 11 | 6 |
| 2026 season | 17 | 16 | 3.31 | 1.29 | 14 | 7 |
How Zack ranks vs qualified MLB pitchers in 2026. Higher percentile = better. The chip on each bar is the percentile (e.g. 11%ile means better than 11% of qualified players).
| Split | IP | ERA | WHIP | K | BB | HR |
|---|---|---|---|---|---|---|
| In relief | 16 | 3.31 | 1.29 | 14 | 7 | 1 |
| Home | 10 | 2.53 | 1.13 | 8 | 3 | 0 |
| Away | 5 | 4.76 | 1.59 | 6 | 4 | 1 |
Last appearance · May 19 · 8 pitches
| Pitch | Count | Usage | Avg Velo | Max |
|---|---|---|---|---|
SweeperST | 3 | 38% | 81.4 mph | 81.9 |
CutterFC | 3 | 38% | 90.2 mph | 90.9 |
Four-Seam FastballFF | 1 | 13% | 93.8 mph | 93.8 |
SinkerSI | 1 | 13% | 94.2 mph | 94.2 |
| Date | Opp | IP | H | R | ER | BB | K | HR | ERA |
|---|---|---|---|---|---|---|---|---|---|
| 2026-05-19 | @ Kansas City Royals | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 3.31 |
| 2026-05-14 | vs Philadelphia Phillies | 0 | 2 | 1 | 0 |
| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | Boston Red Sox | 1 | 0 | 13 | 13.2 | 3.95 | 1.32 | 11 | 4 | 2 | 7.24 | 2.63 |
| 2023 | Boston Red Sox |
| 0 |
| 1 |
| 0 |
| 3.45 |
| 2026-05-12 | vs Philadelphia Phillies | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 3.60 |
| 2026-05-10 | vs Tampa Bay Rays | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 3.86 |
| 2026-05-06 | @ Detroit Tigers | 1 | 0 | 0 | 0 | 2 | 2 | 0 | 3.29 |
| 2026-05-03 | vs Houston Astros | 1 | 1 | 2 | 1 | 2 | 0 | 0 | 3.55 |
| 2026-05-01 | vs Houston Astros | 1 | 2 | 0 | 0 | 0 | 2 | 0 | 3.09 |
| 2026-04-28 | @ Toronto Blue Jays | 1 | 1 | 0 | 0 | 1 | 2 | 0 | 3.48 |
| 2026-04-26 | @ Baltimore Orioles | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.86 |
| 2026-04-22 | vs New York Yankees | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 4.00 |
| 0 |
| 0 |
| 8 |
| 9.1 |
| 3.86 |
| 1.61 |
| 6 |
| 8 |
| 0 |
| 5.79 |
| 7.71 |
| 2024 | Boston Red Sox | 6 | 3 | 49 | 56.2 | 3.97 | 1.25 | 61 | 27 | 10 | 9.69 | 4.29 |
| 2025 | Boston Red Sox | 1 | 3 | 28 | 35.1 | 4.58 | 1.33 | 35 | 12 | 3 | 8.92 | 3.06 |
| 2026 | Boston Red Sox | 0 | 2 | 17 | 16.1 | 3.31 | 1.29 | 14 | 7 | 1 | 7.71 | 3.86 |
| Career | — | 8 | 8 | 115 | 131.1 | 4.04 | 1.31 | 127 | 58 | 16 | 8.70 | 3.97 |
