Here is a list of Williams's best fights. For a list of Williams's losses, refer to "Patrick Williams Losses".
On June 13, 2015 Patrick Williams faced off against Alejandro Pérez in a bantamweight bout at age 33. He was coming in with a record of 8-4 (6), and Pérez was 25 years old and with a record of 15-5 (11). Williams stopped Alejandro Pérez via choke-out.