| Oct 22, 1998 | Arizona State 44, Stanford 38 | Box score |
| Oct 24, 1998 | Air Force 42, Tulsa 21 | Box score |
| Oct 24, 1998 | 14Arizona 45, UL Monroe 7 | Box score |
| Oct 24, 1998 | Auburn 32, Louisiana Tech 17 | Box score |
| Oct 24, 1998 | Boise State 30, Utah State 16 | Box score |
| Oct 24, 1998 | Bowling Green 42, Kent State 21 | Box score |
| Oct 24, 1998 | BYU 46, San José State 43 | Box score |
| Oct 24, 1998 | UCF 42, Louisiana 10 | Box score |
| Oct 24, 1998 | Central Michigan 26, Western Michigan 24 | Box score |
| Oct 24, 1998 | Colorado State 42, TCU 21 | Box score |
| Oct 24, 1998 | Duke 28, Clemson 23 | Box score |
| Oct 24, 1998 | 6Florida State 34, 20Georgia Tech 7 | Box score |
| Oct 24, 1998 | Fresno State 32, UTEP 6 | Box score |
| Oct 24, 1998 | 11Georgia 28, Kentucky 26 | Box score |
| Oct 24, 1998 | Houston 31, North Texas 9 | Box score |
| Oct 24, 1998 | Kansas 33, 17Colorado 17upset | Box score |
| Oct 24, 1998 | 4Kansas State 52, Iowa State 7 | Box score |
| Oct 24, 1998 | LSU 41, 24Mississippi State 6upset | Box score |
| Oct 24, 1998 | Louisville 35, Memphis 32 | Box score |
| Oct 24, 1998 | Marshall 42, Ball State 10 | Box score |
| Oct 24, 1998 | Miami 34, 13West Virginia 31upset | Box score |
| Oct 24, 1998 | Miami (OH) 41, Cincinnati 0 | Box score |
| Oct 24, 1998 | Michigan 21, Indiana 10 | Box score |
| Oct 24, 1998 | Minnesota 19, Michigan State 18 | Box score |
| Oct 24, 1998 | Ole Miss 30, Arkansas State 17 | Box score |
| Oct 24, 1998 | Navy 32, Boston College 31 | Box score |
| Oct 24, 1998 | 7Nebraska 20, 19Missouri 13 | Box score |
| Oct 24, 1998 | Nevada 58, Idaho 23upset | Box score |
| Oct 24, 1998 | New Mexico 30, Hawai’i 20 | Box score |
| Oct 24, 1998 | North Carolina 38, Wake Forest 31 | Box score |
| Oct 24, 1998 | Northern Illinois 26, Eastern Michigan 14upset | Box score |
| Oct 24, 1998 | 18Notre Dame 20, Army 17 | Box score |
| Oct 24, 1998 | 1Ohio State 36, Northwestern 10 | Box score |
| Oct 24, 1998 | Oklahoma State 41, Oklahoma 26 | Box score |
| Oct 24, 1998 | 12Oregon 17, USC 13 | Box score |
| Oct 24, 1998 | Purdue 42, Illinois 9 | Box score |
| Oct 24, 1998 | San Diego State 21, Utah 20 | Box score |
| Oct 24, 1998 | SMU 10, UNLV 7 | Box score |
| Oct 24, 1998 | Southern Miss 41, East Carolina 7 | Box score |
| Oct 24, 1998 | 3Tennessee 35, Alabama 18 | Box score |
| Oct 24, 1998 | Texas 30, Baylor 20 | Box score |
| Oct 24, 1998 | 8Texas A&M 17, 25Texas Tech 10 | Box score |
| Oct 24, 1998 | Toledo 24, Akron 17 | Box score |
| Oct 24, 1998 | 22Tulane 52, Rutgers 24 | Box score |
| Oct 24, 1998 | 2UCLA 28, California 16 | Box score |
| Oct 24, 1998 | Vanderbilt 17, South Carolina 14 | Box score |
| Oct 24, 1998 | 16Virginia 23, NC State 13 | Box score |
| Oct 24, 1998 | 23Virginia Tech 41, UAB 0 | Box score |
| Oct 24, 1998 | Washington 35, Oregon State 34 | Box score |
| Oct 24, 1998 | 9Wisconsin 31, Iowa 0 | Box score |
| Oct 24, 1998 | Wyoming 34, Rice 24 | Box score |