American Justin Gatlin roared to a 100 metres victory in Japan on Sunday, as track and field's pantomime villain kicks off his preparations for this summer's Rio Olympics.

Cricket legend Sachin Tendulkar becomes India's third goodwill ambassador for the 2016 Rio Olympics. He accepted the offer after the national Olympic body invited the batting legend to come on board on April 29, confirms India Olympics Association (IOA).

The world number one is relishing the prospect of trying to win an Olympic gold medal but has no problem with fellow professionals opting to skip the Games.

Neymar will miss the Copa America in June, but will be released to represent his country at the Rio Olympics in August, FC Barcelona announced on Wednesday.

There is no chance that the Rio Olympics will be cancelled because of a Zika virus outbreak, Brazil says.