Mike Mussina
P · Hall of Fame · inducted 2019
bWAR
Career
+82.9
2008
+5.1
Pace
+5.1
bWAR is Baseball-Reference’s wins above replacement, not a 40 Man stat. The numbers come from their daily WAR file, which they allow anyone to reuse with a citation and a link. Pace stretches a short year up to 600 plate appearances, or to 180 innings for a starter and 65 for a reliever. A year that already reached that playing time keeps the bWAR he earned, so extra at-bats do not shrink it. It shows once a year reaches 100 plate appearances or 30 innings. File dated 2026-11-07. This player on Baseball-Reference · How bWAR is calculated.
Minors
Level Wins compares him with the 1990–2025 average at that league. Pace stretches a short year up to a normal full season at that level. A year that already reached that playing time keeps what he did, so extra playing time does not shrink it. Level Wins shows once a year reaches 100 plate appearances or 30 innings.
Best minor season
+1.4
1991 · Triple-A · 10-4 · 122.1 IP · 2.87 ERA · 1.14 WHIP · 107 SO · 31 BB · 9 HR
All qualified minor seasons
+2.3
2 seasons added together
- 2004Triple-A · 0-0 · 3 IP · 0.00 ERA · 0.67 WHIP · 5 SO · 0 BB · 0 HR——
- 1993Double-A · 1-0 · 8 IP · 2.25 ERA · 0.75 WHIP · 10 SO · 1 BB · 0 HR——
- 1991Triple-A · 10-4 · 122.1 IP · 2.87 ERA · 1.14 WHIP · 107 SO · 31 BB · 9 HR+1.4+1.6
- 1990Triple-A · 0-0 · 13.1 IP · 1.35 ERA · 0.90 WHIP · 15 SO · 4 BB · 2 HR——
- 1990Double-A · 3-0 · 42.1 IP · 1.49 ERA · 0.97 WHIP · 40 SO · 7 BB · 1 HR+0.9+2.8