Usain Bolt cruised to victory in a sprint challenge on Sunday but the Jamaican world record holder declared himself unhappy with his performance in his first 100 metres of the season.
Bolt pulled away from Ryan Bailey over the last 30 metres to finish in 10.12 seconds, 0.12 seconds clear of the American Olympian.
Brazilian Jose Carlos Moreira was third in 10.51 and Churandy Martina of the Netherlands was fourth in 10.53.
Usain Bolt wins 100m in Rio but unhappy with performance - IBNLive
Bolt pulled away from Ryan Bailey over the last 30 metres to finish in 10.12 seconds, 0.12 seconds clear of the American Olympian.
Brazilian Jose Carlos Moreira was third in 10.51 and Churandy Martina of the Netherlands was fourth in 10.53.
Usain Bolt wins 100m in Rio but unhappy with performance - IBNLive