Paul Williams was the only Grenadan participant in the 2012 Olympic Men's 100m sprint event. He participated in the fifth heat of the 4 August qualification match against seven other competitors, including Jamaican finalist Asafa Powell. Williams ran his event in 10.65 seconds, ranking seventh place. He completed the event 0.61 seconds slower than Jamaican runner Asafa Powell, who ranked first in the heat. Overall, Williams ranked 54th out of the 65 athletes who ranked in the qualification round. Ryan Bailey of the United States of America, who ranked first in the qualification round, was 0.77 seconds faster than Williams, who did not advance to further rounds.