Erwood qualified for the Canadian squad, as the nation's lone rider, in men's BMX cycling at the 2008 Summer Olympics in Beijing by receiving an invitational berth from the Union Cycliste Internationale (UCI) based on his best performance at the UCI World Championships in Victoria, British Columbia, Canada, and by defeating his rival Jim Brown on a sudden-death race-off from an Olympic selection camp in Chula Vista, California. After he grabbed a twenty-sixth seed on the morning prelims with a time of 37.050, Erwood scored a total of 19 placing points to mount an eighth spot in his quarterfinal heat, thus eliminating him from the tournament.