Jason Jennings
P · Born July 17, 1978
Age in each season
- 2001 (Rockies): 22 years, 258 days to 23 years, 76 days
- 2002 (Rockies): 23 years, 258 days to 24 years, 76 days
- 2003 (Rockies): 24 years, 258 days to 25 years, 76 days
- 2004 (Rockies): 25 years, 259 days to 26 years, 76 days
- 2005 (Rockies): 26 years, 258 days to 27 years, 76 days
- 2006 (Rockies): 27 years, 258 days to 28 years, 76 days
- 2007 (Astros): 28 years, 258 days to 29 years, 76 days
- 2008 (Rangers): 29 years, 259 days to 30 years, 76 days
- 2009 (Rangers): 30 years, 258 days to 31 years, 76 days