Serena Williams: Victoria Mboko injury puts Queen's Club doubles campaign in jeopardy

Serena Williams' doubles campaign at Queen's Club is in jeopardy after her partner Victoria Mboko, 19, retired from her singles match against Karolina Pliskova with a knee injury, with the score at 6-2, 3-4 in the second set. Prior to the injury, Williams and Mboko had beaten third-seeded pair Nicole Melichar-Martinez and Erin Routliffe 7-6 (7-2) 6-2 in the doubles draw. The 44-year-old Williams now faces the prospect of being without a doubles partner, and Mboko's Wimbledon campaign is also in doubt.