| Game Date |
| Opponent | Conference Game | Result | Commentary |
| 2/4/2005 |
| Stanford |
| W 5-3 |
|
| 2/5/2005 |
| Stanford |
| W 4-3 |
|
| 2/6/2005 |
| Stanford |
| L 15-10 |
|
| 2/11/2005 |
| Fresno State |
|
| PPD to 2/12, rain |
| 2/12/2005 |
| Fresno State |
|
| PPD, rain (makeup of 2/11 game) |
| 2/12/2005 |
| Fresno State |
| W 12-1 |
|
| 2/13/2005 |
| Fresno State |
| W 9-0 |
|
| 2/15/2005 | at | Loyola Marymount |
| W 10-2 |
|
| 2/18/2005 | at | Southern California |
|
| PPD to 4/12, rain |
| 2/19/2005 |
| Southern California |
|
| PPD to 2/20, rain |
| 2/20/2005 |
| Southern California |
|
| suspended, rain (USC 7-2 in 8th) |
| 2/20/2005 |
| Southern California |
|
| PPD, rain (makeup of 2/19 game) |
| 2/25/2005 | at | Nevada-Las Vegas |
| L 6-5 |
|
| 2/26/2005 | at | Nevada-Las Vegas |
| W 10-4 |
|
| 2/27/2005 | at | Nevada-Las Vegas |
| W 8-0 |
|
| 3/1/2005 | at | San Diego State |
| W 18-8 |
|
| 3/4/2005 |
| Nevada |
|
| PPD to 3/5, rain (Kia Baseball Bash, Fullerton, CA) |
| 3/5/2005 |
| Nevada |
| W 5-0 | makeup of 3/4 game (Kia Baseball Bash, Fullerton, CA) |
| 3/5/2005 |
| Oklahoma |
| W 7-0 | Kia Baseball Bash, Fullerton, CA |
| 3/6/2005 |
| UCLA |
| W 14-4 | Kia Baseball Bash, Fullerton, CA |
| 3/9/2005 |
| Cal State Northridge |
| W 7-4 |
|
| 3/11/2005 | at | Tulane |
| W 15-1 |
|
| 3/12/2005 | at | Tulane |
| W 9-8 | Metairie, LA |
| 3/13/2005 | at | Tulane |
| L 13-9 |
|
| 3/18/2005 |
| Arizona |
| L 1-0 |
|
| 3/19/2005 |
| Arizona |
| W 7-1 |
|
| 3/20/2005 |
| Arizona |
| W 17-15 |
|
| 3/24/2005 | at | Long Beach State |
| L 3-2 |
|
| 3/25/2005 | at | Long Beach State |
| W 5-4 |
|
| 3/26/2005 | at | Long Beach State |
| L 3-1 |
|
| 3/29/2005 | at | UCLA |
| W 7-6 |
|
| 4/1/2005 |
| UC Irvine | * | L 5-1 |
|
| 4/2/2005 |
| UC Irvine | * | W 6-1 |
|
| 4/3/2005 |
| UC Irvine | * | W 6-5 |
|
| 4/5/2005 |
| Loyola Marymount |
| L 13-6 |
|
| 4/8/2005 | at | Cal State Northridge | * | W 11-1 |
|
| 4/9/2005 | at | Cal State Northridge | * | W 24-0 |
|
| 4/10/2005 | at | Cal State Northridge | * | W 8-1 |
|
| 4/12/2005 | at | Southern California |
| L 4-2 | makeup of 2/18 game |
| 4/15/2005 |
| Pacific | * | W 8-5 |
|
| 4/16/2005 |
| Pacific | * | W 11-1 |
|
| 4/17/2005 |
| Pacific | * | W 9-4 |
|
| 4/19/2005 | at | Pepperdine |
| L 6-2 |
|
| 4/20/2005 |
| Southern California |
| L 11-2 | resumption of suspended game (2/20) |
| 4/20/2005 |
| Southern California |
| W 5-3 | makeup of 2/20 game |
| 4/22/2005 | at | UC Davis |
| W 5-1 |
|
| 4/23/2005 | at | UC Davis |
| W 12-7 |
|
| 4/24/2005 | at | UC Davis |
| W 5-2 |
|
| 4/29/2005 |
| UC Santa Barbara | * | W 9-1 |
|
| 4/30/2005 |
| UC Santa Barbara | * | W 10-5 |
|
| 5/1/2005 |
| UC Santa Barbara | * | W 16-2 |
|
| 5/3/2005 |
| San Diego State |
| W 4-3 | 11 innings |
| 5/6/2005 | at | Cal Poly | * | W 3-1 |
|
| 5/7/2005 | at | Cal Poly | * | L 7-1 |
|
| 5/8/2005 | at | Cal Poly | * | W 3-1 |
|
| 5/10/2005 |
| Pepperdine |
| W 13-4 |
|
| 5/17/2005 |
| San Diego |
| W 5-4 | 13 innings |
| 5/20/2005 |
| Long Beach State | * | W 7-2 |
|
| 5/21/2005 |
| Long Beach State | * | L 5-1 |
|
| 5/22/2005 |
| Long Beach State | * | W 10-0 |
|
| 5/27/2005 | at | UC Riverside | * | W 13-7 |
|
| 5/28/2005 | at | UC Riverside | * | L 7-6 |
|
| 5/29/2005 | at | UC Riverside | * | L 6-2 |
|
| 6/3/2005 |
| Harvard |
| W 19-0 | Fullerton Regional, Game 2 |
| 6/4/2005 |
| Arizona |
| L 6-5 | Fullerton Regional, Game 4 |
| 6/5/2005 |
| Missouri |
| W 8-6 | Fullerton Regional, Game 5 |
| 6/5/2005 |
| Arizona |
| W 7-2 | Fullerton Regional, Game 6 |
| 6/6/2005 |
| Arizona |
| W 6-3 | Fullerton Regional, Game 7 |
| 6/10/2005 |
| Arizona State |
| W 3-2 | #6 national seed Super Regional, Game 1 |
| 6/11/2005 |
| Arizona State |
| L 6-2 | #6 national seed Super Regional, Game 2 |
| 6/12/2005 |
| Arizona State |
| L 9-8 | #6 national seed Super Regional, Game 3 |