Dan O'Brien Sr.
Dan O'Brien Sr.  | |
|---|---|
O'Brien during his time with the Seattle Mariners, 1979–1983  | |
| Born | March 26, 1929 Elizabeth, New Jersey, U.S.  | 
| Died | January 16, 2017 (aged 87) | 
| Alma mater | Seton Hall University, Florida Southern College  | 
| Occupation | Baseball executive | 
| Years active | 1955–1993 | 
| Children | 3, including Dan O'Brien Jr. | 
Daniel Francis O'Brien Sr. (March 26, 1929 – January 16, 2017) was an American professional baseball executive who served as the general manager of the Texas Rangers, Seattle Mariners and California Angels of Major League Baseball (MLB).