Ivory Williams has been dropped from the USA team for the World Indoor Championships after testing positive for marijuana following his victory at the trial race in Albuqerque last month.
Caster Semenya's future athletics career still remains under a cloud after it was revealed today no further progress has been made to ascertain her gender status.
Jenny Meadows started her campaign to win the World Indoor Championships 800 metres gold medal with an impressive victory in her heat in Doha this morning.
Jessica Ennis is under no illusions that it will take a personal best score and possibly a world record if she is to win the World Indoor pentathlon gold medal in Doha on Saturday.
Yelena Isinbayeva chasing a fourth successive pole vault title has promised to produce an "unforgettable" at the World Indoor Championships beginning on Friday.
Jessica Ennis showing no pressure as the favourite is instead enthusiastically looking forward to a titanic clash when the World Indoor pentathlon contest gets underway on Saturday.
David Gillick, after recently equalling his Irish 400 metres record and having seen himself thrust into the limelight as a possible gold medallist, is upbeat about his chances at this weekend's World Indoor Championships in Doha.
Dwain Chambers and Jenny Meadows, both genuine gold medal candidates, kickstart their campaigns to achieve their targets when the World Indoor Championships begin in Doha on Friday.
Dwain Chambers career appears to have steered a full circle and is now looking more positive compared to two years ago when he was controversially chosen for the World Indoor Championships in Valencia.
Phillips Idowu for personal reasons and after a disrupted season will not defend his World Championships triple jump title in Doha this weekend.
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