Athletes ranked in the top seven of their event, plus one wild-card, have been invited to compete in the Stade Louis II in the event formerly known as the Grand Prix Final which for the first time is spread over two days.

Collins, who sparked joy on the Caribbean islands of St Kitts and Nevis when he won the blue riband sprint in Paris last month, is due to take on world record holder Tim Montgomery who was only fifth in the world championships final and European champion Dwain Chambers who flopped in fourth.

Montgomery needs an encouraging performance as he has been far from the form that carried him to the world record of 9.78sec in the Grand Prix Final in Paris last year.

While Collins has found time to celebrate his win, Kelli White has endured a nightmare since scooping the 100m/200m double.

White is almost certain to lose her gold medals after the International Association of Athletics Federations (IAAF) this week rejected her explanation for the presence of the stimulant Modafinil in her doping sample after her 100m victory.

The 26-year-old American claims she needs the drug to combat the effects of the sleeping sickness narcolepsy.

If the IAAF's findings are supported by a hearing by the US Anti-Doping Agency (USADA), White could be stripped of her titles.