Dan O'Brien (baseball executive)
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O'Brien began his career in the Seattle Mariners front office in 1977 (the M's inaugural season), then switched to the Houston Astros in 1982, serving first as the team's farm system director and then its scouting director through 1996. He was assistant general manager of the Texas Rangers from 1997 until his appointment to the Cincinnati post in 2003.
His father, Dan O'Brien Sr., was the general manager of three American League West Division clubs from 1974 through 1993 – the Texas Rangers, Seattle Mariners (where he also was club president) and the California Angels.
- Haft, Chris (October 27, 2003). "Reds tab Dan O'Brien as GM". MLB.com. Archived from the original on January 21, 2010. Retrieved July 6, 2010.
- New Reds owner shakes things up, fires GM O'Brien (USA Today, January 23, 2006)
- Dan O'Brien executive history at Baseball America
- Dan O'Brien – executive history at Baseball America
| Cincinnati Reds general manager
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