| Oct 19, 1973 | 14Houston 30, 15Miami 7 | Box score |
| Oct 20, 1973 | 2Alabama 42, 10Tennessee 21 | Box score |
| Oct 20, 1973 | 12Arizona State 52, BYU 12 | Box score |
| Oct 20, 1973 | Arkansas State 37, Xavier 0 | Box score |
| Oct 20, 1973 | Auburn 24, Georgia Tech 10 | Box score |
| Oct 20, 1973 | California 24, Oregon State 14 | Box score |
| Oct 20, 1973 | Cincinnati 27, Wichita State 6 | Box score |
| Oct 20, 1973 | Clemson 24, Duke 8 | Box score |
| Oct 20, 1973 | Dartmouth 28, Brown 16 | Box score |
| Oct 20, 1973 | East Carolina 34, The Citadel 0 | Box score |
| Oct 20, 1973 | Fresno State 15, Long Beach State 14 | Box score |
| Oct 20, 1973 | Furman 19, VMI 13 | Box score |
| Oct 20, 1973 | Harvard 21, Cornell 15 | Box score |
| Oct 20, 1973 | Illinois 6, Michigan State 3 | Box score |
| Oct 20, 1973 | Kansas State 21, Iowa State 19 | Box score |
| Oct 20, 1973 | Lamar 31, Louisiana 0 | Box score |
| Oct 20, 1973 | 9LSU 28, Kentucky 21 | Box score |
| Oct 20, 1973 | Maryland 37, Wake Forest 0 | Box score |
| Oct 20, 1973 | Memphis 13, Florida State 10 | Box score |
| Oct 20, 1973 | 20Miami (OH) 31, Bowling Green 8 | Box score |
| Oct 20, 1973 | 4Michigan 35, Wisconsin 6 | Box score |
| Oct 20, 1973 | Minnesota 31, Iowa 23 | Box score |
| Oct 20, 1973 | Ole Miss 13, Florida 10 | Box score |
| Oct 20, 1973 | Mississippi State 18, Louisville 7upset | Box score |
| Oct 20, 1973 | 7Missouri 13, Oklahoma State 9 | Box score |
| Oct 20, 1973 | Navy 42, Air Force 6 | Box score |
| Oct 20, 1973 | 11Nebraska 10, 18Kansas 9 | Box score |
| Oct 20, 1973 | New Mexico 49, UTEP 0 | Box score |
| Oct 20, 1973 | North Texas 19, Drake 7 | Box score |
| Oct 20, 1973 | Northern Illinois 45, Ball State 17 | Box score |
| Oct 20, 1973 | 8Notre Dame 62, Army 3 | Box score |
| Oct 20, 1973 | 1Ohio State 37, Indiana 7 | Box score |
| Oct 20, 1973 | 3Oklahoma 34, 16Colorado 7 | Box score |
| Oct 20, 1973 | 5Penn State 49, Syracuse 6 | Box score |
| Oct 20, 1973 | Pittsburgh 28, Boston College 14upset | Box score |
| Oct 20, 1973 | Princeton 37, Colgate 21 | Box score |
| Oct 20, 1973 | Purdue 21, Northwestern 10 | Box score |
| Oct 20, 1973 | Richmond 38, West Virginia 17 | Box score |
| Oct 20, 1973 | San Diego State 13, Pacific 10 | Box score |
| Oct 20, 1973 | South Carolina 38, Ohio 22 | Box score |
| Oct 20, 1973 | 6USC 31, Oregon 10 | Box score |
| Oct 20, 1973 | SMU 27, Rice 16 | Box score |
| Oct 20, 1973 | Southern Miss 41, Texas–Arlington 14 | Box score |
| Oct 20, 1973 | Stanford 23, Washington 14 | Box score |
| Oct 20, 1973 | Tampa 25, Southern Illinois 23 | Box score |
| Oct 20, 1973 | Texas 34, Arkansas 6 | Box score |
| Oct 20, 1973 | Texas A&M 35, TCU 16 | Box score |
| Oct 20, 1973 | Texas Tech 31, 19Arizona 17upset | Box score |
| Oct 20, 1973 | Toledo 14, Dayton 10 | Box score |
| Oct 20, 1973 | 17Tulane 16, North Carolina 0 | Box score |
| Oct 20, 1973 | Tulsa 52, New Mexico State 14 | Box score |
| Oct 20, 1973 | 13UCLA 24, Washington State 13 | Box score |
| Oct 20, 1973 | Utah 28, San José State 21 | Box score |
| Oct 20, 1973 | Utah State 36, West Texas 14 | Box score |
| Oct 20, 1973 | Vanderbilt 18, Georgia 14upset | Box score |
| Oct 20, 1973 | Virginia Tech 27, Virginia 15 | Box score |
| Oct 20, 1973 | Western Michigan 21, Marshall 7 | Box score |
| Oct 20, 1973 | William & Mary 51, Davidson 35 | Box score |
| Oct 20, 1973 | Wyoming 35, Colorado State 3 | Box score |
| Oct 20, 1973 | Yale 29, Columbia 0 | Box score |