| UFC Fight Night | 02/19 00:45 | - | William Knight v Marcin Prachnio | 0-1 | |
| UFC Fight Night | 04/17 00:10 | - | Devin Clark v William Knight | 1-0 | |
| UFC | 02/12 23:00 | - | William Knight v Maxim Grishin | 0-1 | |
| UFC Fight Night | 12/05 00:50 | - | Alonzo Menifield v William Knight | 0-1 | |
| UFC Fight Night | 08/22 00:10 | - | William Knight v Fabio Cherant | 1-0 | |
| UFC Fight Night | 04/10 16:00 | - | Da Un Jung v William Knight | 1-0 | |
| UFC | 09/26 23:55 | - | William Knight v Aleksa Camur | 1-0 | |
| UFC Contender Series | 09/02 00:35 | - | William Knight v Cody Brundage | 1-0 |