Olympic preparation dominates sports news as Bolt targets sub-9.4 seconds while GB athletics aims for eight medals; marathon season features defending champion Mutai and British MotoGP riders seek titles.

Usain Bolt sets ambitious goals for London 2012 Olympics, targeting 9.4 seconds in the 100m and 19 seconds in the 200m to "amaze" the world with his performances.

UK Athletics head coach Charles van Commenee expresses confidence that the British squad can achieve the target of eight medals at the London Olympics.

UK Athletics addresses family support by purchasing tickets to ensure athletes' friends and relatives can watch them compete at the London 2012 Games.

Emmanuel Mutai is determined to defend his London Marathon title despite recently recovering from typhoid fever contracted last month.

Haile Gebrselassie abandons his Olympic dream and will not compete in the London 2012 marathon, ending his bid to participate in the Games.

Lee Merrien from Guernsey aims to qualify for the Olympics through Sunday's London Marathon, entering the race in peak physical condition.

Olympic 400m hurdles gold hopeful Dai Greene announces his Diamond League season will begin in Rome on May 31, marking the start of his competitive schedule.

Haile Gebrselassie defeats Paula Radcliffe in Vienna's "Emperor versus the Queen" half marathon, outpacing the former world record holder in a head-to-head matchup.

British riders are targeting Moto2 and Moto3 titles in the 2012 MotoGP season, with competitive racing expected outside the top class.