John Halama ERA in 2004
4.702004 Regular Season
John Halama posted a 4.70 ERA in the 2004 regular season.
- 4th-best of John Halama's 9 seasons on file; the best is 3.56 in 2002.
- Up 0.48 from 4.22 in 2003.
Figures come from ESPN's box scores and were last read on October 29, 2026.