COLLEGE FOOTBALL STATISTICS
FBS: 4th Down Conversion Pct Defense
| Rank | Team | G | W-L | Opp 4th Conv | Opp 4th Att | Pct |
| 1 | Western Mich. (MAC) | 12 | 4-8 | 2 | 10 | 0.200 |
| 2 | Oklahoma St. (Big 12) | 14 | 10-4 | 6 | 25 | 0.240 |
| 3 | Tennessee (SEC) | 13 | 9-4 | 7 | 26 | 0.269 |
| 4 | Memphis (AAC) | 13 | 10-3 | 9 | 31 | 0.290 |
| 5 | Arizona (Pac-12) | 13 | 10-3 | 6 | 20 | 0.300 |
| 6 | Florida (SEC) | 12 | 5-7 | 4 | 13 | 0.308 |
| 7 | Wisconsin (Big Ten) | 13 | 7-6 | 7 | 22 | 0.318 |
| 8 | Michigan (Big Ten) | 15 | 15-0 | 11 | 34 | 0.324 |
| 9 | East Carolina (AAC) | 12 | 2-10 | 6 | 18 | 0.333 |
| 9 | Troy (Sun Belt) | 14 | 11-3 | 10 | 30 | 0.333 |
| 11 | Eastern Mich. (MAC) | 13 | 6-7 | 12 | 34 | 0.353 |
| 12 | BYU (Big 12) | 12 | 5-7 | 8 | 22 | 0.364 |
| 13 | South Alabama (Sun Belt) | 13 | 7-6 | 8 | 21 | 0.381 |
| 14 | TCU (Big 12) | 12 | 5-7 | 12 | 31 | 0.387 |
| 15 | Nebraska (Big Ten) | 12 | 5-7 | 9 | 23 | 0.391 |
| 16 | Duke (ACC) | 13 | 8-5 | 11 | 28 | 0.393 |
| 17 | App State (Sun Belt) | 14 | 9-5 | 8 | 20 | 0.400 |
| 17 | Ga. Southern (Sun Belt) | 13 | 6-7 | 6 | 15 | 0.400 |
| 19 | Washington (Pac-12) | 15 | 14-1 | 15 | 37 | 0.405 |
| 20 | Alabama (SEC) | 14 | 12-2 | 11 | 27 | 0.407 |
| 20 | Rice (AAC) | 13 | 6-7 | 11 | 27 | 0.407 |
| 22 | Texas A&M (SEC) | 13 | 7-6 | 7 | 17 | 0.412 |
| 23 | Ole Miss (SEC) | 13 | 11-2 | 12 | 29 | 0.414 |
| 24 | Boise St. (Mountain West) | 14 | 8-6 | 10 | 24 | 0.417 |
| 24 | Notre Dame (FBS Independent) | 13 | 10-3 | 10 | 24 | 0.417 |
| 24 | Utah (Pac-12) | 13 | 8-5 | 10 | 24 | 0.417 |
| 27 | UCLA (Pac-12) | 13 | 8-5 | 8 | 19 | 0.421 |
| 28 | Georgia St. (Sun Belt) | 13 | 7-6 | 11 | 26 | 0.423 |
| 29 | Marshall (Sun Belt) | 13 | 6-7 | 12 | 28 | 0.429 |
| 29 | Miami (FL) (ACC) | 13 | 7-6 | 6 | 14 | 0.429 |
| 31 | Florida St. (ACC) | 14 | 13-1 | 13 | 30 | 0.433 |
| 31 | LSU (SEC) | 13 | 10-3 | 13 | 30 | 0.433 |
| 33 | Miami (OH) (MAC) | 14 | 11-3 | 14 | 32 | 0.438 |
| 34 | Army West Point (FBS Independent) | 12 | 6-6 | 11 | 25 | 0.440 |
| 34 | Louisville (ACC) | 14 | 10-4 | 11 | 25 | 0.440 |
| 34 | Texas Tech (Big 12) | 13 | 7-6 | 11 | 25 | 0.440 |
| 37 | Hawaii (Mountain West) | 13 | 5-8 | 9 | 20 | 0.450 |
| 38 | Clemson (ACC) | 13 | 9-4 | 10 | 22 | 0.455 |
| 38 | Purdue (Big Ten) | 12 | 4-8 | 5 | 11 | 0.455 |
| 40 | Kansas St. (Big 12) | 13 | 9-4 | 17 | 37 | 0.459 |
| 40 | Liberty (CUSA) | 14 | 13-1 | 17 | 37 | 0.459 |
| 40 | Tulane (AAC) | 14 | 11-3 | 17 | 37 | 0.459 |
| 43 | Toledo (MAC) | 14 | 11-3 | 12 | 26 | 0.462 |
| 44 | Texas (Big 12) | 14 | 12-2 | 13 | 28 | 0.464 |
| 45 | Massachusetts (FBS Independent) | 12 | 3-9 | 7 | 15 | 0.467 |
| 45 | Syracuse (ACC) | 13 | 6-7 | 14 | 30 | 0.467 |
| 47 | Texas St. (Sun Belt) | 13 | 8-5 | 15 | 32 | 0.469 |
| 48 | Utah St. (Mountain West) | 13 | 6-7 | 8 | 17 | 0.471 |
| 49 | Oregon (Pac-12) | 14 | 12-2 | 18 | 38 | 0.474 |
| 50 | Coastal Carolina (Sun Belt) | 13 | 8-5 | 12 | 25 | 0.480 |
| 50 | Pittsburgh (ACC) | 12 | 3-9 | 12 | 25 | 0.480 |
| 52 | Bowling Green (MAC) | 13 | 7-6 | 15 | 31 | 0.484 |
| 52 | Ohio (MAC) | 13 | 10-3 | 15 | 31 | 0.484 |
| 54 | Arkansas (SEC) | 12 | 4-8 | 6 | 12 | 0.500 |
| 54 | Baylor (Big 12) | 12 | 3-9 | 11 | 22 | 0.500 |
| 54 | Central Mich. (MAC) | 12 | 5-7 | 12 | 24 | 0.500 |
| 54 | Fla. Atlantic (AAC) | 12 | 4-8 | 19 | 38 | 0.500 |
| 54 | New Mexico (Mountain West) | 12 | 4-8 | 9 | 18 | 0.500 |
| 54 | Northwestern (Big Ten) | 13 | 8-5 | 13 | 26 | 0.500 |
| 54 | Ohio St. (Big Ten) | 13 | 11-2 | 16 | 32 | 0.500 |
| 54 | Southern Miss. (Sun Belt) | 12 | 3-9 | 9 | 18 | 0.500 |
| 54 | UConn (FBS Independent) | 12 | 3-9 | 9 | 18 | 0.500 |
| 54 | UTEP (CUSA) | 12 | 3-9 | 9 | 18 | 0.500 |
| 64 | North Carolina (ACC) | 13 | 8-5 | 17 | 33 | 0.515 |
| 64 | South Fla. (AAC) | 13 | 7-6 | 17 | 33 | 0.515 |
| 66 | Rutgers (Big Ten) | 13 | 7-6 | 15 | 29 | 0.517 |
| 67 | Old Dominion (Sun Belt) | 13 | 6-7 | 14 | 27 | 0.519 |
| 67 | West Virginia (Big 12) | 13 | 9-4 | 14 | 27 | 0.519 |
| 69 | Akron (MAC) | 12 | 2-10 | 12 | 23 | 0.522 |
| 69 | UNLV (Mountain West) | 14 | 9-5 | 12 | 23 | 0.522 |
| 71 | Indiana (Big Ten) | 12 | 3-9 | 10 | 19 | 0.526 |
| 72 | Oklahoma (Big 12) | 13 | 10-3 | 18 | 34 | 0.529 |
| 72 | San Diego St. (Mountain West) | 12 | 4-8 | 9 | 17 | 0.529 |
| 72 | Virginia Tech (ACC) | 13 | 7-6 | 9 | 17 | 0.529 |
| 75 | Illinois (Big Ten) | 12 | 5-7 | 8 | 15 | 0.533 |
| 75 | Kent St. (MAC) | 12 | 1-11 | 8 | 15 | 0.533 |
| 77 | Georgia Tech (ACC) | 13 | 7-6 | 14 | 26 | 0.538 |
| 78 | Air Force (Mountain West) | 13 | 9-4 | 12 | 22 | 0.545 |
| 79 | New Mexico St. (CUSA) | 15 | 10-5 | 17 | 31 | 0.548 |
| 80 | FIU (CUSA) | 12 | 4-8 | 11 | 20 | 0.550 |
| 80 | Penn St. (Big Ten) | 13 | 10-3 | 11 | 20 | 0.550 |
| 82 | SMU (AAC) | 14 | 11-3 | 21 | 38 | 0.553 |
| 83 | Auburn (SEC) | 13 | 6-7 | 15 | 27 | 0.556 |
| 84 | Charlotte (AAC) | 12 | 3-9 | 9 | 16 | 0.562 |
| 84 | Colorado St. (Mountain West) | 12 | 5-7 | 9 | 16 | 0.562 |
| 84 | Middle Tenn. (CUSA) | 12 | 4-8 | 9 | 16 | 0.562 |
| 87 | Oregon St. (Pac-12) | 13 | 8-5 | 13 | 23 | 0.565 |
| 87 | Wyoming (Mountain West) | 13 | 9-4 | 13 | 23 | 0.565 |
| 89 | Georgia (SEC) | 14 | 13-1 | 17 | 30 | 0.567 |
| 90 | Arizona St. (Pac-12) | 12 | 3-9 | 12 | 21 | 0.571 |
| 90 | Mississippi St. (SEC) | 12 | 5-7 | 16 | 28 | 0.571 |
| 90 | NC State (ACC) | 13 | 9-4 | 12 | 21 | 0.571 |
| 90 | ULM (Sun Belt) | 12 | 2-10 | 8 | 14 | 0.571 |
| 94 | Virginia (ACC) | 12 | 3-9 | 11 | 19 | 0.579 |
| 95 | UTSA (AAC) | 13 | 9-4 | 18 | 31 | 0.581 |
| 96 | Iowa (Big Ten) | 14 | 10-4 | 14 | 24 | 0.583 |
| 96 | Iowa St. (Big 12) | 13 | 7-6 | 21 | 36 | 0.583 |
| 96 | NIU (MAC) | 13 | 7-6 | 7 | 12 | 0.583 |
| 96 | UCF (Big 12) | 13 | 6-7 | 14 | 24 | 0.583 |
| 100 | Fresno St. (Mountain West) | 13 | 9-4 | 17 | 29 | 0.586 |
| 101 | North Texas (AAC) | 12 | 5-7 | 16 | 27 | 0.593 |
| 101 | UAB (AAC) | 12 | 4-8 | 16 | 27 | 0.593 |
| 103 | Ball St. (MAC) | 12 | 4-8 | 12 | 20 | 0.600 |
| 103 | Kansas (Big 12) | 13 | 9-4 | 12 | 20 | 0.600 |
| 103 | Navy (AAC) | 12 | 5-7 | 15 | 25 | 0.600 |
| 106 | California (Pac-12) | 13 | 6-7 | 23 | 38 | 0.605 |
| 107 | Southern California (Pac-12) | 13 | 8-5 | 17 | 28 | 0.607 |
| 108 | South Carolina (SEC) | 12 | 5-7 | 14 | 23 | 0.609 |
| 109 | Buffalo (MAC) | 12 | 3-9 | 11 | 18 | 0.611 |
| 109 | Kentucky (SEC) | 13 | 7-6 | 11 | 18 | 0.611 |
| 109 | Nevada (Mountain West) | 12 | 2-10 | 11 | 18 | 0.611 |
| 109 | Temple (AAC) | 12 | 3-9 | 11 | 18 | 0.611 |
| 113 | Stanford (Pac-12) | 12 | 3-9 | 13 | 21 | 0.619 |
| 114 | Colorado (Pac-12) | 12 | 4-8 | 10 | 16 | 0.625 |
| 114 | Tulsa (AAC) | 12 | 4-8 | 15 | 24 | 0.625 |
| 116 | Maryland (Big Ten) | 13 | 8-5 | 22 | 35 | 0.629 |
| 117 | Wake Forest (ACC) | 12 | 4-8 | 12 | 19 | 0.632 |
| 117 | Washington St. (Pac-12) | 12 | 5-7 | 12 | 19 | 0.632 |
| 119 | Houston (Big 12) | 12 | 4-8 | 14 | 22 | 0.636 |
| 119 | Louisiana Tech (CUSA) | 12 | 3-9 | 14 | 22 | 0.636 |
| 121 | Missouri (SEC) | 13 | 11-2 | 12 | 18 | 0.667 |
| 121 | San Jose St. (Mountain West) | 13 | 7-6 | 20 | 30 | 0.667 |
| 123 | Western Ky. (CUSA) | 13 | 8-5 | 27 | 40 | 0.675 |
| 124 | Cincinnati (Big 12) | 12 | 3-9 | 12 | 17 | 0.706 |
| 125 | Michigan St. (Big Ten) | 12 | 4-8 | 10 | 14 | 0.714 |
| 125 | Vanderbilt (SEC) | 12 | 2-10 | 10 | 14 | 0.714 |
| 127 | Boston College (ACC) | 13 | 7-6 | 13 | 18 | 0.722 |
| 128 | Louisiana (Sun Belt) | 13 | 6-7 | 23 | 31 | 0.742 |
| 129 | Arkansas St. (Sun Belt) | 13 | 6-7 | 19 | 25 | 0.760 |
| 130 | Minnesota (Big Ten) | 13 | 6-7 | 8 | 10 | 0.800 |
| Reclassifying | ||||||
| - | James Madison (Sun Belt) | 13 | 11-2 | 14 | 34 | 0.412 |
| - | Jacksonville St. (CUSA) | 13 | 9-4 | 12 | 29 | 0.414 |
| - | Sam Houston (CUSA) | 12 | 3-9 | 10 | 18 | 0.556 |