Williams' Queen's campaign in doubt after Mboko injury

Serena Williams' doubles campaign at Queen's is in jeopardy after her partner Victoria Mboko suffered a knee injury in her singles match against Karolina Pliskova. The 23-time Grand Slam champion, 44, made her return to tennis on Tuesday after almost four years away from the sport, playing doubles alongside Mboko. The pair knocked out the third seeds, but there is now uncertainty around their quarter-final match after Mboko suffered a nasty fall on Wednesday. …