| UFC Fight Night | 2022/04/17 00:10 | Devin Clark v William Knight | 1-0 |
| UFC | 2022/02/12 23:00 | William Knight v Maxim Grishin | 0-1 |
| UFC Fight Night | 2021/12/05 00:50 | Alonzo Menifield v William Knight | 0-1 |
| UFC Fight Night | 2021/08/22 00:10 | William Knight v Fabio Cherant | 1-0 |
| UFC Fight Night | 2021/04/10 16:00 | Da Un Jung v William Knight | 1-0 |
| UFC | 2020/09/26 23:55 | William Knight v Aleksa Camur | 1-0 |
| UFC Contender Series | 2020/09/02 00:35 | William Knight v Cody Brundage | 1-0 |
| UFC Fight Night | 2022/04/23 22:25 | Marcin Prachnio v Philipe Lins | 0-1 |
| UFC Fight Night | 2021/06/26 18:35 | Marcin Prachnio v Ike Villanueva | 1-0 |
| UFC | 2021/01/24 01:00 | Khalil Rountree v Marcin Prachnio | 0-1 |
| UFC Fight Night | 2020/08/23 01:45 | Mike Rodriguez v Marcin Prachnio | 1-0 |
| UFC Fight Night | 2018/09/15 15:30 | Magomed Ankalaev v Marcin Prachnio | 1-0 |