Usain Bolt completed another triumphant appearance at London’s Olympic Stadium as he led the Racers Track Club team to success in the 4x100 metres relay in the Sainsbury’s Anniversary Games.

Triple Olympic champion Usain Bolt tonight responded to reports that training partner Yohan Blake is one of five Jamaican athletes to have tested positive for a banned substance.

ALAN O’BRIEN (Crusaders) was relatively unknown when he won the IMC 800m at Cork City Sports last year.

Usain Bolt will revert to the 100 metres in Toronto next month following his blistering performance at the recent Bupa Manchester 150m street sprint.

Current world champion Betty Heidler posted a winning throw of 72.43 metres in a class-laden hammer event at Friday night's Morton Memorial meeting in Santry.