Players · L · Pitcher · 2026
Derek Law
- Age
- 36
- B/T
- R/R
- Height
- 6' 3"
- Weight
- 225 lb
- Number
- #38
- Born
- September 14, 1990 in Pittsburgh, PA, United States
- MLB debut
- April 15, 2016
- Drafted
- 2009, round 28
- College
- Miami Dade CC
- High school
- Seton LaSalle Catholic
- dbWAR
- 3.4 11 season(s)
- IP
- 9.0
- ERA
- 1.00
- FIP
- 2.99
- K/9
- 5.0
- FIP−
- 72 100 = avg
Derek Law is a relief pitcher for the Arizona Diamondbacks. In 2026 he struck out 5 batters over 9.0 innings across 7 appearances, going 0-0. His ERA of 1.00 is 76.1% lower than the league average of 4.18. Stripping out defence, his 2.99 FIP suggests that his ERA had some help behind him. He missed bats on 20.6% of swings (9.0% of every pitch he threw), walked 5.9% of the batters he faced and struck out 14.7%. His 0.2 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.
League context
Percentile among qualified pitchers, 2026.
WAR by season
Pitching
Standard and advanced, by season.
| Trend | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | AZ | 7 | 1 | 9.0 | 0 | 0 | 0 | 8 | 1 | 5 | 2 | 1.00 | 2.99 | 1.11 | 5.0 | 2.0 | 24 | 72 | 0.2 | |
| 2024 | WSH | 75 | 0 | 90.0 | 7 | 4 | 1 | 82 | 26 | 76 | 24 | 2.60 | 3.32 | 1.18 | 7.6 | 2.4 | 64 | 81 | 1.3 | |
| 2023 | CIN | 54 | 3 | 55.0 | 4 | 6 | 2 | 50 | 22 | 45 | 26 | 3.60 | 4.62 | 1.38 | 7.4 | 4.3 | 83 | 107 | 0.2 | |
| 2022 | CIN/DET | 17 | 0 | 19.2 | 2 | 3 | 0 | 23 | 9 | 17 | 8 | 4.12 | 4.89 | 1.58 | 7.8 | 3.7 | 104 | 123 | -0.1 | |
| 2021 | MIN | 9 | 0 | 15.0 | 0 | 0 | 0 | 16 | 7 | 14 | 8 | 4.20 | 4.64 | 1.60 | 8.4 | 4.8 | 98 | 109 | 0.0 | |
| 2019 | TOR | 58 | 4 | 60.2 | 1 | 2 | 5 | 61 | 33 | 67 | 40 | 4.90 | 4.85 | 1.66 | 9.9 | 5.9 | 109 | 108 | 0.2 | |
| 2018 | SF | 7 | 0 | 13.1 | 1 | 0 | 0 | 16 | 11 | 12 | 8 | 7.42 | 5.34 | 1.80 | 8.1 | 5.4 | 179 | 129 | -0.1 | |
| 2017 | SF | 41 | 0 | 37.1 | 4 | 1 | 4 | 45 | 21 | 35 | 14 | 5.06 | 4.31 | 1.58 | 8.4 | 3.4 | 116 | 99 | 0.2 | |
| 2016 | SF | 61 | 0 | 55.0 | 4 | 2 | 1 | 44 | 13 | 50 | 9 | 2.13 | 2.53 | 0.96 | 8.2 | 1.5 | 51 | 60 | 1.4 |
Batting
Standard and advanced, by season.
Platoon splits
How left- and right-handed hitters fare against him.
| Split | PA | AB | H | HR | BB | SO | AVG | OBP | SLG | wOBA | K% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| vs LHB | 18 | 15 | 5 | 0 | 2 | 2 | .333 | .389 | .400 | .349 | 11.1% |
| vs RHB | 16 | 15 | 3 | 0 | 0 | 3 | .200 | .250 | .267 | .237 | 18.8% |
Pitch sequencing
What Derek Law throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Derek Law throws in it.
Pitch arsenal
What he throws, how hard, how often it misses, and what hitters do with it.
| Cutter | 58 | 89.9 | 2,260 | 46.6% | 13.0% | 12 | — | — | |
| Slider | 49 | 86.0 | 2,218 | 28.6% | 28.6% | 12 | — | — | |
| Four-Seam Fastball | 26 | 93.2 | 2,069 | 50.0% | 16.7% | 3 | — | — | |
| Changeup | 13 | 84.4 | 1,826 | 38.5% | 14.3% | 3 | — | — |
Head to head
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wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.