Percy Alfred Williams was a Canadian athlete, winner of the 100 and 200 metres races at the 1928 Summer Olympics and a former world record holder for the 100 metres sprint. Percy Williams (Canada) set the men's 100 m world record of 10.3 in Toronto, Canada on August 9, 1930. It stood 2 years, until Eddie Tolan's 10.3 on August 1, 1932 (equalling it). Wiki link