Dan O'Brien Sr., Date of Birth, Place of Birth, Date of Death
TweetDan O'Brien Sr.
American baseball executive
Date of Birth: 26-Mar-1929
Place of Birth: Elizabeth, New Jersey, United States
Date of Death: 16-Jan-2017
Profession: military personnel
Nationality: United States
Zodiac Sign: Aries 
About Dan O'Brien Sr.
- Daniel F.
- O'Brien Sr.
- (March 26, 1929 – January 16, 2017) was an American front office executive in Major League (MLB) and minor league baseball who served as the general manager of three American League West Division teams.
- He was the father of Dan O'Brien Jr., a former MLB general manager and scouting director.
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