Baseball America
Baseball America Executive Database
Information for the Baseball America Executive Database was compiled through listings in the annual Sporting News Guide series, contemporary newspaper reports, interviews and other sources. We welcome additions or corrections; please send them, preferably with substantiation, to execdb@baseballamerica.com.
Dan O'Brien
| FRONT OFFICE HISTORY | |||
| Year | Team | Title | Function |
| 1964 | Minor Leagues/National Association | Assistant to the President | |
| 1965 | Minor Leagues/National Association | Assistant to the President | |
| 1966 | Minor Leagues/National Association | Assistant to the President | |
| 1967 | Minor Leagues/National Association | Assistant to the President | |
| 1968 | Minor Leagues/National Association | Assistant to the President | |
| 1969 | Minor Leagues/National Association | Assistant to the President | |
| 1970 | Minor Leagues/National Association | Assistant to the President | |
| 1971 | Minor Leagues/National Association | Assistant to the President | |
| 1972 | Minor Leagues/National Association | Assistant to the President | |
| 1973 | Minor Leagues/National Association | Assistant to the President | |
| 1974 | Texas Rangers | Vice President (Hired Sept. 1973) |
General Manager |
| 1975 | Texas Rangers | General Manager | General Manager |
| 1976 | Texas Rangers | General Manager | General Manager |
| 1977 | Texas Rangers | General Manager (Co-General Manager) |
General Manager |
| 1978 | Texas Rangers | General Manager (Co-GM; Resigned Jan. 1979) |
General Manager |
| 1979 | Seattle Mariners | President | President |
| 1980 | Seattle Mariners | President | President |
| 1981 | Seattle Mariners | President | General Manager |
| 1982 | Seattle Mariners | President | General Manager |
| 1983 | Seattle Mariners | President | General Manager |
| 1986 | Cleveland Indians | Senior VP, Baseball Administrator & Player Relations | Assistant GM |
| 1987 | Cleveland Indians | Senior VP, Baseball Administrator & Player Relations | Assistant GM |
| 1988 | Cleveland Indians | Senior VP, Baseball Administrator & Player Relations | Assistant GM |
| 1989 | Cleveland Indians | VP, Baseball Administrator & Player Relations | Assistant GM |
| 1990 | California Angels | Vice President, Baseball Operations | Assistant GM |
| 1991 | California Angels | (Hired 5/1/1991) |
General Manager |
| 1991 | California Angels | Senior Vice President, Baseball Operations | Assistant GM |
| 1992 | California Angels | General Manager | |
| 1992 | California Angels | Senior Vice President, Baseball Operations | Assistant GM |
| 1993 | California Angels | (Replaced 9/17/1993) |
General Manager |
| 1993 | California Angels | Senior Vice President, Baseball Operations | Assistant GM |
| 2012 | Milwaukee Brewers | Special Assistant to GM/Baseball Operations | Special Assistant to the GM |
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Information for the Baseball America Executive Database was compiled through listings in the annual Sporting News Guide series, contemporary newspaper reports, interviews and other sources. We welcome additions or corrections; please send them, preferably with substantiation, to execdb@baseballamerica.com.