Rio de Janeiro: Usain Bolt claimed his first 100 metre race of the season by winning the 'Mano a Mano' sprint challenge here. But the 28-year-old was unhappy with his time of 10.12 seconds at the Brazilian Jockey Club on Sunday, reports Xinhua.


Jamaica's Usain Bolt (right) wins the 'Mano a Mano' race at Jockey Club in Rio de Janeiro on Sunday. Pic/AFP 

"I think it was poor execution overall," Bolt said. "I am sure my coach isn't going to be too happy. The good thing is that I won."