John Johnstone
P · Born November 25, 1968
Age in each season
- 1993 (Marlins): 24 years, 127 days to 24 years, 310 days
- 1994 (Marlins): 25 years, 127 days to 25 years, 310 days
- 1995 (Marlins): 26 years, 127 days to 26 years, 310 days
- 1996 (Astros): 27 years, 128 days to 27 years, 311 days
- 1997 (Giants, Athletics): 28 years, 127 days to 28 years, 310 days
- 1998 (Giants): 29 years, 127 days to 29 years, 310 days
- 1999 (Giants): 30 years, 127 days to 30 years, 310 days
- 2000 (Giants): 31 years, 128 days to 31 years, 311 days