| UFC Fight Night | 08/10 22:00 | - | Jhonata Diniz v Karl Williams | 1-0 | |
| UFC Fight Night | 03/24 03:55 | - | Karl Williams v Justin Tafa | 1-0 | |
| UFC Fight Night | 05/13 18:10 | - | Karl Williams v Chase Sherman | 1-0 | |
| UFC | 04/09 00:30 | - | Karl Williams v Chase Sherman | View | |
| UFC Fight Night | 03/11 22:40 | - | Lukasz Brzeski v Karl Williams | 0-1 | |
| UFC Contender Series | 09/07 01:15 | - | Karl Williams v Jimmy Lawson | 1-0 |