Players · D · Pitcher · 2024
Tyler Duffey
- Age
- 34
- B/T
- R/R
- Height
- 6' 3"
- Weight
- 220 lb
- Number
- #21
- Born
- December 27, 1990 in Houston, TX, United States
- MLB debut
- August 5, 2015
- Drafted
- 2012, round 5
- College
- Rice
- High school
- Bellaire
- dbWAR
- 5.4 11 season(s)
- IP
- 9.0
- ERA
- 5.00
- FIP
- 3.94
- K/9
- 10.0
- FIP−
- 97 100 = avg
Tyler Duffey was a relief pitcher for the Kansas City Royals. In 2024 he struck out 10 batters over 9.0 innings across 9 appearances, going 1-0. His ERA of 5.00 was 22.6% higher than the league average of 4.08. Stripping out defence, his 3.94 FIP suggests he pitched better than his ERA shows. He missed bats on 23.9% of swings (9.0% of every pitch he threw), walked 19.0% of the batters he faced and struck out 23.8%. His 0.1 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, 2024.
WAR by season
Pitching
Standard and advanced, by season.
| Trend | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | KC | 9 | 0 | 9.0 | 1 | 0 | 0 | 7 | 5 | 10 | 8 | 5.00 | 3.94 | 1.67 | 10.0 | 8.0 | 123 | 97 | 0.1 | |
| 2023 | CHC | 1 | 0 | 2.0 | 0 | 0 | 0 | 1 | 1 | 3 | 0 | 4.50 | 6.76 | 0.50 | 13.5 | 0.0 | 104 | 156 | -0.0 | |
| 2022 | MIN | 40 | 0 | 44.0 | 2 | 4 | 2 | 45 | 24 | 39 | 15 | 4.91 | 4.79 | 1.36 | 8.0 | 3.1 | 124 | 121 | -0.2 | |
| 2021 | MIN | 64 | 0 | 62.1 | 3 | 3 | 3 | 48 | 22 | 61 | 28 | 3.18 | 3.49 | 1.22 | 8.8 | 4.0 | 74 | 82 | 0.9 | |
| 2020 | MIN | 22 | 0 | 24.0 | 1 | 1 | 0 | 13 | 5 | 31 | 6 | 1.88 | 2.57 | 0.79 | 11.6 | 2.3 | 42 | 58 | 0.7 | |
| 2019 | MIN | 58 | 0 | 57.2 | 5 | 1 | 0 | 44 | 16 | 82 | 14 | 2.50 | 3.06 | 1.01 | 12.8 | 2.2 | 55 | 68 | 1.3 | |
| 2018 | MIN | 19 | 1 | 25.0 | 2 | 2 | 0 | 26 | 20 | 19 | 4 | 7.20 | 5.36 | 1.20 | 6.8 | 1.4 | 174 | 129 | -0.2 | |
| 2017 | MIN | 56 | 0 | 71.0 | 2 | 3 | 1 | 79 | 39 | 67 | 18 | 4.94 | 3.72 | 1.37 | 8.5 | 2.3 | 113 | 85 | 1.0 | |
| 2016 | MIN | 26 | 26 | 133.0 | 9 | 12 | 0 | 167 | 95 | 114 | 32 | 6.43 | 4.73 | 1.50 | 7.7 | 2.2 | 153 | 113 | 0.8 | |
| 2015 | MIN | 10 | 10 | 58.0 | 5 | 1 | 0 | 56 | 20 | 53 | 20 | 3.10 | 3.24 | 1.31 | 8.2 | 3.1 | 78 | 82 | 1.2 |
Batting
Standard and advanced, by season.
| Trend | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2016 | MIN | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | .000 | .000 | .000 | .000 | — | 0.0% | 50.0% | .000 | -0.5 | -116 | -0.0 | — |
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 | 19 | 14 | 4 | 0 | 3 | 5 | .286 | .421 | .500 | .394 | 26.3% |
| vs RHB | 23 | 18 | 3 | 0 | 5 | 5 | .167 | .348 | .167 | .271 | 21.7% |
Pitch sequencing
What Tyler Duffey throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Tyler Duffey throws in it.
Pitch arsenal
What he throws, how hard, how often it misses, and what hitters do with it.
| Knuckle Curve | 57 | 80.7 | 2,535 | 47.4% | 45.0% | 10 | — | — | |
| Four-Seam Fastball | 53 | 90.8 | 2,345 | 47.2% | 21.7% | 10 | — | — | |
| Slider | 33 | 81.2 | 2,427 | 45.5% | 8.3% | 5 | — | — | |
| Sinker | 31 | 91.7 | 2,396 | 48.4% | 9.1% | 5 | — | — | |
| Changeup | 15 | 81.8 | 1,644 | 20.0% | 20.0% | 2 | — | — |
Head to head
Put Tyler Duffey beside up to three others.
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.