De Grasse delayed: Injury derails showdown with Bolt
[caption id="attachment_18872" align="alignright" width="300"] In this Aug. 17, 2016, file photo, Jamaica's Usain Bolt, right, gestures towards Canada's Andre De Grasse after the finish of the men's 200-meter semifinal during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de...