U.S. men disqualifed in 4x100 relay

(Photo credit: Kirby Lee-USA TODAY Sports)
PARIS -- Canada won the men's Olympic 4x100m relay on Friday after the favored foursome from the United States messed up a changeover and were disqualified.

Andre de Grasse ran a superb last leg to bring the Tokyo silver medalists home in 37.50 seconds for their second gold in the event followingtheir 1996 win.

Akani Simbine ran a terrific last leg to get South Africa silver in