ERA
Bob Howry · Season-by-season history
ERA over time
- Chicago White Sox · MLB
- Boston Red Sox · MLB
- Cleveland Guardians · MLB
| Season | Team | League | ERA |
|---|---|---|---|
| 2005 |  Cleveland Guardians |
MLB | 2.47 |
| 2004 | Cleveland Guardians |
MLB | 2.74 |
| 2003 |  Boston Red Sox |
MLB | 12.46 |
| 2002 |  Chicago White Sox |
MLB | 3.91 |
| 2001 | Chicago White Sox |
MLB | 4.69 |
| 2000 | Chicago White Sox |
MLB | 3.17 |
| 1999 | Chicago White Sox |
MLB | 3.59 |
| 1998 | Chicago White Sox |
MLB | 3.15 |