What they say

"He was supposed to slow down. I said: 'What are you doing, it's a semifinal?'"

Usain Bolt, on his conversation with Canada's Andre De Grasse as they crossed the line in the 200m semifinals

"Not just Americans, but all over the world, we're always touched by gun violence, always touched by tragedy. It feels good to be an example, not just for Americans but families all over the world."