Usain Bolt brought the track action at London 2012 to a fittingly brilliant close tonight, anchoring the Jamaican 4x100m relay team to gold in a new world record.

Great Britain’s sprint relay woes continued last night as another baton changeover mistake cost them a place in the 4x100 metres final at the Olympic Stadium.

Allyson Felix was able to put the disappointment of two consecutive silver medals in the women’s 200 meters to claim the gold medal she so desired last night.

CUBAN Dayron Robles became another high-profile disqualification at the World Championships as he was stripped of his 110m hurdles gold medal.

Ireland’s Joanne Cuddihy qualified impressively for the semi-finals of the 400 metres at the World Championships in Daegu tonight, but Paralympic 100m champion Jason Smyth went out.

ASAFA POWELL laid down a challenge to his 100m rivals byclocking a wind-aided 9.75 seconds as the IAAF Diamond League got underway in Doha last night.

AMERICA’S Allyson Felix last night cruised to her third straight 200 metres title in the World Championships in Berlin, but compatriot Jeremy Wariner failed to secure his own hat-trick.

Tyson Gay sent another warning to Usain Bolt that he has the credentials to defend his 100 metres world title with another stunning performance tonight.

VERONICA Campbell-Brown continued a brilliant Olympic Games for Jamaica by successfully defending her 200 metres title in Beijing yesterday.

JAMAICA’S Melaine Walker continued her nation’s stunning Olympics, winning gold in the 400m hurdles in a new Olympic record of 52.64s.

Sportswear giants Adidas are set to be announced as the latest sponsors of London 2012 this week.

The United States dominated the final day of the athletics World Championships with three more victories matching the team’s haul of 14 gold medals two years ago in Helsinki.

Tyson Gay picked up a third gold medal and Team USA continued to dominate in sprinting events by winning the 4x100 metres relay at the World Championships in Osaka tonight.

JEREMY WARINER of the United States won the men’s 400 metres title at the world athletics championships in Helsinki last night.

FANI Halkia of Greece pulled off a stunning upset to win the Olympic Games women’s 400 metres hurdles gold medal in the Olympic Stadium last night.

Gail Devers has accepted Team USA’s invitation to race in the 100 metres at Athens, putting an end to any hope Marion Jones had of defending her title.

Athens gold medal favourite Allen Johnson just scraped into the USA team at the Olympic Trials in Sacramento.

Marion Jones made a winning return to the track at the Millrose Games after taking 14 months out for the birth of her son.