Ron Mrozinski career ERA
5.36Career Regular Season
Ron Mrozinski has a career ERA of 5.36 over 2 regular seasons.
| 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1954 |  PHI | 15 | 1 | 1 | 4.50 | 48.0 | 26 | 25 | 1.54 | 0 |
| 1955 | PHI | 22 | 0 | 2 | 6.55 | 34.1 | 18 | 19 | 1.66 | 1 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV
- Best season on file: 4.50 in 1954.
- Most recent: 6.55 in 1955.
Average of 2 regular seasons, 1954 through 1955. Figures come from ESPN's box scores and were last read on October 27, 2026.