| Oct 2, 1986 | Tulsa 20, Cal State Fullerton 10 | Box score |
| Oct 3, 1986 | Air Force 45, Utah 35 | Box score |
| Oct 3, 1986 | Colorado State 24, BYU 20upset | Box score |
| Oct 4, 1986 | 2Alabama 28, Notre Dame 10 | Box score |
| Oct 4, 1986 | 16Arizona State 16, 15UCLA 9upset | Box score |
| Oct 4, 1986 | 8Arkansas 34, TCU 17 | Box score |
| Oct 4, 1986 | 13Baylor 27, Houston 13 | Box score |
| Oct 4, 1986 | Bowling Green 17, Western Michigan 3 | Box score |
| Oct 4, 1986 | Cincinnati 24, Louisville 17 | Box score |
| Oct 4, 1986 | Georgia 14, Ole Miss 10 | Box score |
| Oct 4, 1986 | Hawai’i 27, New Mexico 10 | Box score |
| Oct 4, 1986 | Indiana 24, Northwestern 7 | Box score |
| Oct 4, 1986 | 11Iowa 24, 17Michigan State 21 | Box score |
| Oct 4, 1986 | Iowa State 21, Wyoming 10 | Box score |
| Oct 4, 1986 | Kent State 33, Central Michigan 30upset | Box score |
| Oct 4, 1986 | Kentucky 32, Southern Miss 0 | Box score |
| Oct 4, 1986 | Louisiana 21, East Carolina 10 | Box score |
| Oct 4, 1986 | 18LSU 28, Florida 17 | Box score |
| Oct 4, 1986 | 1Miami 34, Northern Illinois 0 | Box score |
| Oct 4, 1986 | Miami (OH) 34, Ohio 14 | Box score |
| Oct 4, 1986 | 4Michigan 34, Wisconsin 17 | Box score |
| Oct 4, 1986 | Minnesota 36, Purdue 9 | Box score |
| Oct 4, 1986 | Mississippi State 34, Memphis 17 | Box score |
| Oct 4, 1986 | 3Nebraska 27, South Carolina 24 | Box score |
| Oct 4, 1986 | North Carolina 21, Georgia Tech 20 | Box score |
| Oct 4, 1986 | Ohio State 14, Illinois 0 | Box score |
| Oct 4, 1986 | 6Oklahoma 56, Kansas State 10 | Box score |
| Oct 4, 1986 | 5Penn State 31, Rutgers 6 | Box score |
| Oct 4, 1986 | San José State 45, 19Fresno State 41upset | Box score |
| Oct 4, 1986 | 9USC 35, Oregon 21 | Box score |
| Oct 4, 1986 | SMU 31, Boston College 29 | Box score |
| Oct 4, 1986 | Stanford 17, San Diego State 10 | Box score |
| Oct 4, 1986 | Syracuse 41, Missouri 9 | Box score |
| Oct 4, 1986 | Temple 19, Pittsburgh 13upset | Box score |
| Oct 4, 1986 | Tennessee 26, UTEP 16 | Box score |
| Oct 4, 1986 | Texas 17, Rice 14 | Box score |
| Oct 4, 1986 | 14Texas A&M 45, Texas Tech 8 | Box score |
| Oct 4, 1986 | Toledo 23, Eastern Michigan 18 | Box score |
| Oct 4, 1986 | Utah State 42, New Mexico State 9 | Box score |
| Oct 4, 1986 | Vanderbilt 24, Duke 18 | Box score |
| Oct 4, 1986 | Virginia 30, Wake Forest 28 | Box score |
| Oct 4, 1986 | Virginia Tech 13, West Virginia 7 | Box score |
| Oct 4, 1986 | 12Washington 50, California 18 | Box score |
| Oct 4, 1986 | Washington State 24, Oregon State 14 | Box score |
| Oct 4, 1986 | Wichita State 21, Tulane 20upset | Box score |