Player History
| Season | Team |
|---|---|
| 2022 | Washington Nationals WSH |
| 2021 | Arizona Diamondbacks ARI |
| 2020 | Minnesota Twins MIN |
| 2019 | Cleveland Guardians CLE |
| 2018 | Toronto Blue Jays TOR |
| 2017 |
Multiple Teams Multiple |
| 2016 |
Multiple Teams Multiple |
| 2015 |
Multiple Teams Multiple |
| 2014 | Washington Nationals WSH |
| 2013 | Washington Nationals WSH |
| 2012 | Washington Nationals WSH |
| 2011 | Washington Nationals WSH |
| 2010 | Washington Nationals WSH |
| 2009 | Washington Nationals WSH |
| 2008 | Washington Nationals WSH |
| 2007 | New York Yankees NYY |
| Age | GP | IP | BF | W-L | ERA | WHIP | SV | K | BB | nERD |
|---|---|---|---|---|---|---|---|---|---|---|
| 37 | 4 | 5.0 | 28 | 0-0 | 7.20 | 2.00 | 0 | 4 | 4 | -0.10 |
| 36 | 26 | 25.3 | 111 | 1-1 | 3.20 | 1.30 | 6 | 21 | 11 | 0.38 |
| 35 | 26 | 26.0 | 98 | 2-1 | 2.77 | 0.88 | 0 | 26 | 4 | 1.67 |
| 34 | 53 | 62.0 | 241 | 1-0 | 2.90 | 0.85 | 0 | 64 | 15 | 1.11 |
| 33 | 73 | 68.7 | 285 | 4-3 | 3.67 | 1.17 | 7 | 85 | 23 | 1.06 |
| 32 | 67 | 60.3 | 264 | 2-8 | 4.77 | 1.29 | 5 | 72 | 31 | 1.04 |
| 31 | 69 | 63.0 | 262 | 4-6 | 3.57 | 1.27 | 3 | 72 | 26 | 0.93 |
| 30 | 69 | 71.0 | 301 | 5-4 | 2.92 | 1.13 | 19 | 64 | 31 | 0.82 |
| 29 | 75 | 70.3 | 278 | 7-4 | 2.18 | 1.00 | 1 | 82 | 23 | 0.84 |
| 28 | 72 | 71.0 | 275 | 6-3 | 2.41 | 0.86 | 0 | 73 | 24 | 0.79 |
| 27 | 74 | 72.7 | 307 | 2-6 | 3.72 | 1.16 | 32 | 84 | 29 | 1.00 |
| 26 | 72 | 88.3 | 329 | 3-0 | 1.83 | 0.84 | 0 | 104 | 26 | 1.06 |
| 25 | 78 | 91.0 | 378 | 11-8 | 3.07 | 1.21 | 1 | 112 | 41 | 1.23 |
| 24 | 41 | 60.3 | 246 | 4-2 | 2.69 | 1.13 | 0 | 67 | 32 | 0.90 |
| 23 | 2 | 10.3 | 48 | 1-1 | 4.35 | 1.84 | 0 | 8 | 7 | 0.02 |
| 22 | 6 | 27.0 | 124 | 3-1 | 6.33 | 1.70 | 0 | 18 | 17 | 0.22 |
