Jamaica's sprinter Usain Bolt gestures during a press conference prior the Golden Spike Athletic meeting in Ostrava, Czech Republic, Monday, June 26, 2017. Bolt will compete in the 100 meters at the Golden Spike on Wednesday, June 28, 2017. (AP Photo/Petr David Josek)
Jamaican sprinter Usain Bolt
The Jamaican sprinter and three-time Olympic gold medalist will be one of the biggest names to watch at the London Games.