Roy Oswalt career ERA
3.36Career Regular Season
Roy Oswalt has a career ERA of 3.36 over 13 regular seasons.
- Best season on file: 2.73 in 2001.
- Most recent: 8.63 in 2013.
Average of 13 regular seasons, 2001 through 2013. Figures come from ESPN's box scores and were last read on September 22, 2026.
| GP: Games the player appeared in, however briefly. | W: Games in which this pitcher was credited with the win. | L: Games in which this pitcher was charged with the loss. | ERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent. | IP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs. | K: Batters this pitcher struck out. | BB: Times the batter reached first base on four balls. | WHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite. | SV: Games finished by protecting a narrow lead to the last out. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 2001 |  HOU | 28 | 14 | 3 | 2.73 | 141.2 | 144 | 24 | 1.06 | 0 |
| 2002 | HOU | 35 | 19 | 9 | 3.01 | 233.0 | 208 | 62 | 1.19 | 0 |
| 2003 | HOU | 21 | 10 | 5 | 2.97 | 127.1 | 108 | 29 | 1.14 | 0 |
| 2004 | HOU | 36 | 20 | 10 | 3.49 | 237.0 | 206 | 62 | 1.24 | 0 |
| 2005 | HOU | 35 | 20 | 12 | 2.94 | 241.2 | 184 | 48 | 1.20 | 0 |
| 2006 | HOU | 33 | 15 | 8 | 2.98 | 220.2 | 166 | 38 | 1.17 | 0 |
| 2007 | HOU | 33 | 14 | 7 | 3.18 | 212.0 | 154 | 60 | 1.33 | 0 |
| 2008 | HOU | 32 | 17 | 10 | 3.54 | 208.2 | 165 | 47 | 1.18 | 0 |
| 2009 | HOU | 30 | 8 | 6 | 4.12 | 181.1 | 138 | 42 | 1.24 | 0 |
| 2010 |  HOU/PHI | 33 | 13 | 13 | 2.76 | 211.2 | 193 | 55 | 1.03 | 0 |
| 2011 | PHI | 23 | 9 | 10 | 3.69 | 139.0 | 93 | 33 | 1.34 | 0 |
| 2012 |  TEX | 17 | 4 | 3 | 5.80 | 59.0 | 59 | 11 | 1.53 | 0 |
| 2013 |  COL | 9 | 0 | 6 | 8.63 | 32.1 | 34 | 9 | 1.79 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV