As an amateur, Knowles represented the Bahamas across various international competitions in the light welterweight division.

[1] He fought two professional bouts in 2013, both wins, over Ruben Ozuna and Alejandro Ochoa.

[2] 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.