Sean Graham was drafted by the Winnipeg Blue Bombers in the first round of the 1995 CFL College Draft after graduating from UBC. Graham played three years for the Blue Bombers from 1995-1998 as a slotback and wide receiver and also contributed on special teams. In 1998 Graham signed as a free agent with his hometown BC Lions. He played four years for the Lions from 1998-2001. He was a key member for the BC Lions in 2000 helping them to win their 4th Grey Cup in franchise history.