British sprinter Dwain Chambers and his lawyers have appeared in London's High Court seeking a temporary injunction against his lifetime Olympic doping ban.

In a preliminary hearing on his appeal Wednesday, Chambers challenged the British Olympic Association bylaw that bans athletes with doping violations from all future Games.  His case will be heard next Wednesday.

The 30-year-old Chambers received a two-year suspension for taking the designer steroid THG (tetrahydrogestrinone) in 2003.

If Chambers wins his hearing next week, the judge will issue an injunction to let him compete next month at the Beijing Olympics.  But he must still qualify for the team by finishing either first or second in the 100-meters at Britain's Olympic trials this weekend.

A full hearing on his challenge against the BOA rule is expected to be held by next March.

Some information for this report was provided by AFP and AP.