Guillermo Moscoso career ERA
4.28Career Regular Season
Guillermo Moscoso has a career ERA of 4.28 over 5 regular seasons.
- Best season on file: 3.21 in 2009.
- Most recent: 5.10 in 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 2009 |  TEX | 10 | 0 | 0 | 3.21 | 14.0 | 12 | 6 | 1.50 | 0 |
| 2010 | TEX | 1 | 0 | 0 | 27.00 | 0.2 | 2 | 2 | 6.00 | 0 |
| 2011 |  ATH | 23 | 8 | 10 | 3.38 | 128.0 | 74 | 38 | 1.09 | 0 |
| 2012 |  COL | 23 | 3 | 2 | 6.12 | 50.0 | 47 | 19 | 1.72 | 0 |
| 2013 |  SF | 13 | 2 | 2 | 5.10 | 30.0 | 31 | 21 | 1.37 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV