Here is a list of Drysdale's best fights.
On July 13, 2012 Robert Drysdale faced off against Ike Villanueva at age 30. He was coming in with a record of 4-0 (4), and Villanueva was 28 years old and with a record of 8-6 (7). Drysdale stopped Ike Villanueva via submission.
On July 22, 2016 Robert Drysdale fought Ryan Spann in a light-heavyweight title fight for Spann's Legacy FC Championship title. Drysdale was 34 years old and with a record of 7-0 (7), and Spann was 24 years old and with a record of 9-2 (8). Drysdale stopped Ryan Spann via 2nd-round submission and is crowned the new light-heavyweight world champion.