Canada's Victoria Mboko withdrew from her first-round match at the HSBC Championships on Wednesday after appearing to sustain an injury during the second set.

Serena Williams' comeback at Queen's could be over after her doubles partner, Victoria Mboko, suffered an injury and was in tears after a worrying slip.

The 44-year-old, 23-time Grand Slam singles champion and 14-time Grand Slam women’s doubles champion united with Victoria Mboko, the 19-year-old Canadian rising star, against No. 3 seeds Erin Routliffe of New Zealand and Nicole Melichar-Martinez of the U.S., for a stunning 7-6 (2), 6-2 win.

Less than a year ago, Victoria Mboko was a promising young player with a few rounds at the majors under her belt and a couple of wins over top-50 players. Now, she’s a phenom partnering with Serena Williams at the warm-up tournament to Wimbledon, and one ...