Dwain Chambers has been warned he cannot simply stroll on to Britain’s 4x100m relay team if he manages to overturn his Olympic ban.

Lawyers representing Dwain Chambers are to mount a legal challenge in the High Court to his lifetime suspension for using banned steroids to enable him to compete in the Beijing Olympics.

Olympic champion Mark Lewis-Francis insists Great Britain’s 4x100 metre relay team at the World Championships in Osaka has the individual potential to be better than the one that stormed to gold in Athens three years ago.

Irish athletes Gary Ryan and Paul Hession took the top two spots in the men's 200 metres at the Mardyke today.

SINCE her sensational victory as a 17 year old back in 1987, when she beat a star-studded field in the women’s 3,000m, Sonia O’Sullivan has been a star attraction at The Mardyke.

European 100metres champion Dwain Chambers opened his 2003 season with a third place in the Modesto Relays in California.