SERENA WILLIAMS’S London comeback at the Queen’s Club Championships was prematurely curtailed today after her doubles partner Victoria Mboko was forced to withdraw with a left knee injury.

It looked unlikely Williams, 44, and Mboko, 19, would play Leylah Fernandez and Laura Siegemund last night as scheduled when Mboko retired from her singles match against Karolina Pliskova on Wednesday after slipping in the second set.

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