Prior to the formation of the Presidents' Cup, the Big Sky Conference awarded a Combined All-Sports Trophy. The Big Sky discontinued the Combined All-Sports Trophy after the 2001-02 season.
| Year |
Winner |
| 2001-02 |
Weber State |
| 2000-01 |
Weber State |
| 1999-2000 |
Northern Arizona |
| 1998-99 |
Weber State |
| 1997-98 |
Northern Arizona |
| 1996-97 |
Northern Arizona |
| 1995-96 |
Boise State |
| 1994-95 |
Boise State |
| 1993-94 |
Boise State |
| 1992-93 |
Boise State |
| 1991-92 |
Weber State |
| 1990-91 |
Weber State |
| 1989-90 |
Idaho |
| 1988-89 |
Boise State |