Rio de Janeiro: The history-chasing exploits of Usain Bolt will take centre-stage as the Olympic track and field competition begins from Friday with the drug-tarnished sport seeking rebirth after a year of shame.

Ten days of competition in Rio de Janeiro’s Olympic stadium get under way with officials keen to draw a line under a miserable 12 months which has left the athletics’ image languishing at an all-time low. As ever, it will be left to track and field’s greatest showman, Bolt, to restore the feel-good factor as the sport attempts to turn the page on the Russian doping scandal and corruption allegations.

In his last Olympics, Jamaican star Bolt is gunning for 100m, 200m and 4x100m relay gold after sweeping the titles in 2008 and 2012. The first leg of Bolt’s “Treble Treble" quest gets under way on Saturday, with the opening heats of the 100m before the final on Sunday.

“As a young kid you grow up looking forward to the big games," said Bolt. “Championships are what matters. This is what I do." Just as he was at the World Championships in Beijing, Bolt is likely to find himself cast as the good guy in a hero vs villain duel with long-time rival Justin Gatlin.

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Bolt has the 9.58sec 100m world record, but Gatlin is the fastest man in the world this season over 100m and he continues to polarise opinion over his two doping bans. At an Olympics which has seen ugly spats in the swimming pool involving athletes with drug-tainted records, it is a safe bet that Gatlin will once again find his past under scrutiny.

Sebastian Coe, the president of the International Association of Athletics Federations (IAAF), says he hopes Gatlin will be treated politely by fellow competitors. “I can’t change my view on (Gatlin) but he’s eligible to compete and he should be accorded the same courtesy as any athlete who is within these rules is accorded," said Coe, who last year said the thought of Gatlin winning the 100m in Beijing made him “queasy".

Coe said he hoped fans watching track and field would cast aside cynicism, even if the “the last year has sorely tested all of us." “I genuinely hope that those people that are watching our sport are watching with hope and they’re watching with excitement and they’re watching with belief," Coe said.