Williams' Queen's run over as injured Mboko withdraws

Serena Williams' doubles campaign at Queen's has been curtailed as her playing partner Victoria Mboko has withdrawn with a left knee injury. The 23-time Grand Slam singles champion, 44, made her return to tennis on Tuesday after almost four years away from the sport. The pair had been scheduled to play their quarter-final on Thursday but Mboko, 19, suffered a nasty fall in her singles match on Wednesday, which forced her to retire from the match. …