Neville Austin, London's 6ft 10in England international, ruled himself out after damaging his groin in last week's 65-56 victory over Milan.
Austin said: "I think I will need treatment and rehab for two or three weeks," which rules him out of Saturday's league trip to the also unbeaten Birmingham Bullets and next Tuesday's European tie with Honved of Hungary.
Austin watched from the sidelines as London took their winning run in the league to five at the weekend by beating Leicester City Riders 99- 77 and Watford Royals 98-59. He was joined on the bench against Watford by American team-mate James Hamilton.
Hamilton suffered the same injury on the first weekend of the season. The coach, Kevin Cadle, has used him sparingly in the league, but the 6ft 7in forward's contribution will be vital tonight.
Frustratingly for Cadle, he has an able replacement for Austin in the 6ft 11in Keith Robinson. But the American can play only in the league as London's two permitted foreigners in Europe are Hamilton and Danny Lewis.Reuse content