Ryan Cook career ERA
3.58Career Regular Season
Ryan Cook has a career ERA of 3.58 over 6 regular seasons.
- Best season on file: 2.09 in 2012.
- Most recent: 5.29 in 2018.
Figures come from ESPN's box scores and were last read on September 21, 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 2011 |  ARI | 12 | 0 | 1 | 7.04 | 7.2 | 7 | 8 | 2.48 | 0 |
| 2012 |  ATH | 71 | 6 | 2 | 2.09 | 73.1 | 80 | 27 | 0.94 | 14 |
| 2013 | ATH | 71 | 6 | 4 | 2.54 | 67.1 | 67 | 25 | 1.29 | 2 |
| 2014 | ATH | 54 | 1 | 3 | 3.42 | 50.0 | 50 | 22 | 1.08 | 1 |
| 2015 |  ATH/BOS | 9 | 0 | 2 | 18.69 | 8.2 | 6 | 7 | 3.12 | 0 |
| 2018 |  SEA | 19 | 2 | 1 | 5.29 | 17.0 | 23 | 7 | 1.29 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV