| Oct 8, 1998 | 17Virginia Tech 17, Boston College 0 | Box score |
| Oct 9, 1998 | San Diego State 35, Hawai’i 13 | Box score |
| Oct 10, 1998 | Air Force 49, Navy 7 | Box score |
| Oct 10, 1998 | Akron 45, Kent State 16 | Box score |
| Oct 10, 1998 | Alabama 20, Ole Miss 17 | Box score |
| Oct 10, 1998 | 20Arkansas 23, Memphis 9 | Box score |
| Oct 10, 1998 | Army 38, Houston 28 | Box score |
| Oct 10, 1998 | Baylor 31, Kansas 24 | Box score |
| Oct 10, 1998 | BYU 38, UNLV 14 | Box score |
| Oct 10, 1998 | California 32, 19USC 31upset | Box score |
| Oct 10, 1998 | UCF 38, Northern Illinois 17 | Box score |
| Oct 10, 1998 | Central Michigan 36, Eastern Michigan 23 | Box score |
| Oct 10, 1998 | Clemson 23, Maryland 0 | Box score |
| Oct 10, 1998 | Colorado State 34, Tulsa 7 | Box score |
| Oct 10, 1998 | Duke 19, Wake Forest 16upset | Box score |
| Oct 10, 1998 | East Carolina 26, UAB 7 | Box score |
| Oct 10, 1998 | 6Florida 22, 11LSU 10 | Box score |
| Oct 10, 1998 | 8Florida State 26, Miami 14 | Box score |
| Oct 10, 1998 | Georgia Tech 47, 23NC State 24upset | Box score |
| Oct 10, 1998 | Idaho 52, Arkansas State 14 | Box score |
| Oct 10, 1998 | Iowa 26, Northwestern 24 | Box score |
| Oct 10, 1998 | 5Kansas State 16, 14Colorado 9 | Box score |
| Oct 10, 1998 | Kentucky 33, South Carolina 28 | Box score |
| Oct 10, 1998 | Louisiana Tech 44, UL Monroe 14 | Box score |
| Oct 10, 1998 | Marshall 30, Ohio 23 | Box score |
| Oct 10, 1998 | Miami (OH) 24, Bowling Green 12 | Box score |
| Oct 10, 1998 | Michigan State 38, Indiana 31 | Box score |
| Oct 10, 1998 | Mississippi State 38, Auburn 21 | Box score |
| Oct 10, 1998 | 21Missouri 35, Iowa State 19 | Box score |
| Oct 10, 1998 | New Mexico State 48, Nevada 45upset | Box score |
| Oct 10, 1998 | North Carolina 29, Pittsburgh 10 | Box score |
| Oct 10, 1998 | North Texas 21, Boise State 13 | Box score |
| Oct 10, 1998 | 22Notre Dame 28, Arizona State 9 | Box score |
| Oct 10, 1998 | 1Ohio State 41, Illinois 0 | Box score |
| Oct 10, 1998 | 15Oregon 51, Washington State 29 | Box score |
| Oct 10, 1998 | Oregon State 30, Stanford 23 | Box score |
| Oct 10, 1998 | 13Penn State 27, Minnesota 17 | Box score |
| Oct 10, 1998 | San José State 20, Rice 17 | Box score |
| Oct 10, 1998 | Southern Miss 56, Louisville 21 | Box score |
| Oct 10, 1998 | 24Syracuse 63, Cincinnati 21 | Box score |
| Oct 10, 1998 | 4Tennessee 22, 7Georgia 3 | Box score |
| Oct 10, 1998 | Texas 34, Oklahoma 3 | Box score |
| Oct 10, 1998 | 18Texas A&M 28, 2Nebraska 21upset | Box score |
| Oct 10, 1998 | TCU 21, Fresno State 10 | Box score |
| Oct 10, 1998 | Texas Tech 24, Oklahoma State 17 | Box score |
| Oct 10, 1998 | UTEP 22, New Mexico 19upset | Box score |
| Oct 10, 1998 | Toledo 27, Ball State 6 | Box score |
| Oct 10, 1998 | 3UCLA 52, 10Arizona 28 | Box score |
| Oct 10, 1998 | Washington 53, Utah State 12 | Box score |
| Oct 10, 1998 | 16West Virginia 37, Temple 7 | Box score |
| Oct 10, 1998 | Western Michigan 27, Vanderbilt 24 | Box score |
| Oct 10, 1998 | 12Wisconsin 31, Purdue 24 | Box score |
| Oct 10, 1998 | Wyoming 12, SMU 7 | Box score |