Frank Tanana ERA in 1989
3.581989 Regular Season
Frank Tanana posted a 3.58 ERA in the 1989 regular season.
- 8th-best of Frank Tanana's 21 seasons on file; the best is 2.44 in 1976.
- Down 0.63 from 4.21 in 1988.
Average of 21 regular seasons, 1973 through 1993. Figures come from ESPN's box scores and were last read on September 21, 2026.