View splits adjusted to be per 162 games or 650 PAs
First column (I) indicates when a split may be incomplete due to missing play-by-play data. For all seasons after 1968, the play-by-play data is complete (summary of missing data for pre-1969).Position: Pitcher
Bats: Right • Throws: Left
6-2, 205lb (188cm, 92kg)
Born: December 23, 1942 in Appleton, MN us
High School: West Central School of Agriculture (Morris, MN)
School: University of Minnesota Morris (Morris, MN)
Debut:
April 14, 1967
(Age 24-112d,
12,558th in major league history)
vs. PHI 2.2 IP, 0 H, 2 SO, 2 BB, 0 ER
Last Game:
August 21, 1985
(Age 42-241d)
vs. LAD 0.2 IP, 5 H, 0 SO, 2 BB, 5 ER, L
Rookie Status: Exceeded rookie limits during 1968 season
Full Name: Jerome Martin Koosman
Nicknames: Kooz
View Player Info from the B-R Bullpen
View Player Bio from the SABR BioProject
Career
53.6
222
209
3.36
612
527
17
3839.1
2556
1.259
View splits adjusted to be per 162 games or 650 PAs
First column (I) indicates when a split may be incomplete due to missing play-by-play data. For all seasons after 1968, the play-by-play data is complete (summary of missing data for pre-1969).