Mark Johnson
C · Born September 12, 1975
Age in each season
- 1998 (White Sox): 22 years, 201 days to 23 years, 19 days
- 1999 (White Sox): 23 years, 201 days to 24 years, 19 days
- 2000 (White Sox): 24 years, 202 days to 25 years, 19 days
- 2001 (White Sox): 25 years, 201 days to 26 years, 19 days
- 2002 (White Sox): 26 years, 201 days to 27 years, 19 days
- 2003 (Athletics): 27 years, 201 days to 28 years, 19 days
- 2004 (Brewers): 28 years, 202 days to 29 years, 19 days
- 2008 (Cardinals): 32 years, 202 days to 33 years, 19 days