Usain Bolt sets ambitious Olympic targets while UK Athletics eyes medal success; London Marathon features defending champion Mutai and emerging British talent ahead of Olympic season

Usain Bolt aims to run 9.4 seconds in the 100m and 19 seconds in the 200m at the London 2012 Olympics, seeking to "amaze" the world with record-breaking performances.

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

UK Athletics will purchase tickets to guarantee that athletes' friends and families can attend and support them during competition at the London Games.

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

Haile Gebrselassie abandons his Olympic ambitions and will not compete in the London 2012 marathon after previously holding the world record in the event.

Guernsey's Lee Merrien is in peak form as he attempts to qualify for the Olympics by competing in Sunday's London Marathon.

Olympic 400m hurdles gold medal prospect Dai Greene announces his Diamond League season will begin in Rome on May 31, 2012.

Haile Gebrselassie decisively defeats Paula Radcliffe in Vienna's "Emperor versus the Queen" half marathon, showcasing his enduring competitive strength.

British riders are intensifying their competition for titles in Moto2 and Moto3 racing classes, with the competitive intensity in lower MotoGP categories rivaling the premier class.