John Patterson ERA in 2004
5.032004 Regular Season
John Patterson posted a 5.03 ERA in the 2004 regular season.
- 4th-best of John Patterson's 6 seasons on file; the best is 3.13 in 2005.
- Down 1.02 from 6.05 in 2003.
Figures come from ESPN's box scores and were last read on October 25, 2026.