Jamaican sprinter Usain Bolt arrived in Moscow on Sunday determined to win gold at the IAAF World Championships and prove to the world that he is “still a champion”.

Bolt said after performing a set with DJs at a Jamaican-themed party in the Puma Yard in the capital’s Gorky Park.

Bolt said despite the absence of some of other big-name sprinters at the competition, he was preparing for a solid performance at the worlds.

American Tyson Gay and Jamaica’s ex-100m world record holder Asafa Powell dropped out of the competition after positive drug tests. Reigning 100 metres champion Yohan Blake will not compete due to injury.

Even so, Bolt said, he was motivated to bring home gold.

He said he would wait to hear the outcomes of Gay’s and Powell’s investigations before weighing in on how doping is affecting his sport.

He also said his false start at the 2011 worlds in Daegu that disqualified him from the final of the 100 metres was behind him.

Bolt dazzled the crowds at the London Olympics, playfully declaring himself a legend after winning 100, 200 and relay gold to match his feat from Beijing in 2008.

He said that he would even try to find time to race Britain’s Olympic middle distance champion Mo Farah for charity in a 600-metre contest.

But his focus is on the 100- and 200-metres – the races that have made him the fastest man in history, setting world records at the 2009 championships in Berlin.

Bolt’s main rival for the 100 gold is likely to be American Justin Gatlin, a twice-convicted doper who returned from a four-year ban in 2010 which will not help a sport struggling with its image following a deluge of failed drugs tests across track and field events.