Rio 2016: Andre De Grasse 100m semifinal

Jamaica’s Usain Bolt wins his heat in the 100 meter semifinals during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Sunday, Aug. 14, 2016. (AP Photo/Morry Gash)

Jamaica’s Usain Bolt, centre, Canada’s Andre De Grasse, right, and Britain’s Chijindu Ujah compete in a men’s 100-meter semifinal during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Sunday, Aug. 14, 2016. (AP Photo/David J. Phillip)

Jamaica’s Usain Bolt, left, looks to Canada’s Andre De Grasse after crossing the line during a men’s 100-meter semifinal during the athletics competitions in the Olympic stadium of the 2016 Summer Olympics in Rio de Janeiro, Brazil, Sunday, Aug. 14, 2016. (AP Photo/Matt Slocum)

Andre DeGrasse during the 100m seminfinal (photo/ Stephen Hosier)

Andre DeGrasse after finishing the 100m semi-final (COC photo/ Mark Blinch)

Andre DeGrasse during the 100m seminfinal

Andre DeGrasse and Usain Bolt after finishing first and second in their 100m semi-final. COC Photo/Mark Blinch)