Frank Castillo
P · Born April 1, 1969
Age in each season
- 1991 (Cubs): 22 years, 0 days to 22 years, 183 days
- 1992 (Cubs): 23 years, 0 days to 23 years, 183 days
- 1993 (Cubs): 24 years, 0 days to 24 years, 183 days
- 1994 (Cubs): 25 years, 0 days to 25 years, 183 days
- 1995 (Cubs): 26 years, 0 days to 26 years, 183 days
- 1996 (Cubs): 27 years, 0 days to 27 years, 183 days
- 1997 (Cubs, Rockies): 28 years, 0 days to 28 years, 183 days
- 1998 (Tigers): 29 years, 0 days to 29 years, 183 days
- 2000 (Blue Jays): 31 years, 0 days to 31 years, 183 days
- 2001 (Red Sox): 32 years, 0 days to 32 years, 183 days
- 2002 (Red Sox): 33 years, 0 days to 33 years, 183 days
- 2004 (Red Sox): 35 years, 0 days to 35 years, 183 days
- 2005 (Marlins): 36 years, 0 days to 36 years, 183 days