Bolt says athletics on right track

Jamaican superstar confident his sport can purge itself of specter of doping

Usain Bolt waltzed in to sprinkle a bucket of stardust over Rio on Monday, and while there were samba smiles and dancing girls, the biggest name at the Olympics could not escape the ever-present specter of doping.

Bolt, who is gunning for a "triple-triple" in the 100 meters, 200 meters and 4x100m relay, was his usual ebullient self as top billing at an eye-catching Team Jamaica media conference at Cicada des Arts theater.