| Oct 17, 1998 | Alabama 23, East Carolina 22 | Box score |
| Oct 17, 1998 | 16Arizona 28, Oregon State 7 | Box score |
| Oct 17, 1998 | 17Arkansas 41, South Carolina 28 | Box score |
| Oct 17, 1998 | BYU 31, Hawai’i 9 | Box score |
| Oct 17, 1998 | 19Colorado 19, 22Texas Tech 17 | Box score |
| Oct 17, 1998 | Colorado State 47, New Mexico State 28 | Box score |
| Oct 17, 1998 | 5Florida 24, Auburn 3 | Box score |
| Oct 17, 1998 | 6Florida State 48, Clemson 0 | Box score |
| Oct 17, 1998 | 13Georgia 31, Vanderbilt 6 | Box score |
| Oct 17, 1998 | 25Georgia Tech 41, 7Virginia 38upset | Box score |
| Oct 17, 1998 | Idaho 26, Utah State 14 | Box score |
| Oct 17, 1998 | Indiana 14, Iowa 7 | Box score |
| Oct 17, 1998 | 4Kansas State 52, Oklahoma State 20 | Box score |
| Oct 17, 1998 | Kentucky 39, 21LSU 36upset | Box score |
| Oct 17, 1998 | Louisiana 21, Arkansas State 19 | Box score |
| Oct 17, 1998 | Louisiana Tech 54, UAB 23 | Box score |
| Oct 17, 1998 | Marshall 42, Kent State 7 | Box score |
| Oct 17, 1998 | Memphis 41, Cincinnati 23 | Box score |
| Oct 17, 1998 | Miami (OH) 28, Ball State 17 | Box score |
| Oct 17, 1998 | Michigan 12, Northwestern 6 | Box score |
| Oct 17, 1998 | 20Missouri 20, Oklahoma 6 | Box score |
| Oct 17, 1998 | 8Nebraska 41, Kansas 0 | Box score |
| Oct 17, 1998 | NC State 27, Duke 24 | Box score |
| Oct 17, 1998 | North Texas 27, Nevada 21 | Box score |
| Oct 17, 1998 | Northern Illinois 16, Central Michigan 6upset | Box score |
| Oct 17, 1998 | Ohio 28, Akron 14 | Box score |
| Oct 17, 1998 | 1Ohio State 45, Minnesota 15 | Box score |
| Oct 17, 1998 | 12Penn State 31, Purdue 13 | Box score |
| Oct 17, 1998 | Rice 14, Tulsa 10 | Box score |
| Oct 17, 1998 | Rutgers 25, Pittsburgh 21upset | Box score |
| Oct 17, 1998 | San Diego State 36, New Mexico 33 | Box score |
| Oct 17, 1998 | USC 42, Washington State 14 | Box score |
| Oct 17, 1998 | SMU 10, TCU 6 | Box score |
| Oct 17, 1998 | Southern Miss 37, Army 13 | Box score |
| Oct 17, 1998 | 23Syracuse 42, Boston College 25 | Box score |
| Oct 17, 1998 | Temple 28, 14Virginia Tech 24upset | Box score |
| Oct 17, 1998 | 10Texas A&M 35, Baylor 14 | Box score |
| Oct 17, 1998 | UTEP 28, San José State 21 | Box score |
| Oct 17, 1998 | Toledo 24, Bowling Green 16 | Box score |
| Oct 17, 1998 | 24Tulane 28, Louisville 22 | Box score |
| Oct 17, 1998 | 2UCLA 41, 11Oregon 38 | Box score |
| Oct 17, 1998 | Utah 24, Fresno State 16 | Box score |
| Oct 17, 1998 | Wake Forest 20, Maryland 10 | Box score |
| Oct 17, 1998 | Washington 21, California 13 | Box score |
| Oct 17, 1998 | Western Michigan 45, Eastern Michigan 35 | Box score |
| Oct 17, 1998 | 9Wisconsin 37, Illinois 3 | Box score |
| Oct 17, 1998 | Wyoming 28, UNLV 25 | Box score |