Mike Hartley
P · Born August 31, 1961
Age in each season
- 1989 (Dodgers): 27 years, 213 days to 28 years, 31 days
- 1990 (Dodgers): 28 years, 213 days to 29 years, 31 days
- 1991 (Dodgers, Phillies): 29 years, 213 days to 30 years, 31 days
- 1992 (Phillies): 30 years, 214 days to 31 years, 31 days
- 1993 (Twins): 31 years, 213 days to 32 years, 31 days
- 1995 (Red Sox, Orioles): 33 years, 213 days to 34 years, 31 days