Knowles missed qualification for the 2012 Summer Olympics and soon after turned professional.[1] He fought two professional bouts in 2013, both wins, over Ruben Ozuna and Alejandro Ochoa. During this time he trained in Miami, under Orlando Cuellar.[2]
Shooting
His career was ended by a shooting in 2014, outside an apartment complex in the Kemp Road area of Nassau. Shots were fired at Knowles and three other pedestrians from a vehicle which had pulled up, with the boxer struck multiple times.[3] Knowles was shot in the leg, upper right chest, chin and twice in his left hand.[4] He was sent to hospital in a serious condition but doctors were able to save his life. His leg was broken in three places and he suffered a fractured jaw.[5]
He is now a certified international amateur boxing coach.[6]