Serena Williams' hopes of partnering with sister Venus at Wimbledon hang in the balance after a knee injury cast doubt on her doubles participation. The seven-time singles champion returned to the All England Club after a 1,462-day absence, creating significant buzz around what many viewed as a potential farewell appearance.

Williams stepped onto Centre Court on Tuesday, competing in the venue where she captured seven singles and six doubles titles. Her performance against 20-year-old Joint showcased flashes of her legendary form, though the American veteran couldn't secure victory in what may prove to be a costly defeat.

Joint prevailed 6-3 6-7 (6-8) 6-3 in a match that tested Williams' physical limits. Known for her hatred of losing, the 23-time Grand Slam winner pushed hard despite evident discomfort, potentially aggravating the knee injury that now threatens her doubles campaign.

Missing the doubles would represent a disappointing conclusion to Williams' highly-anticipated Wimbledon return, denying fans a final chance to see the Williams sisters compete together on the sport's biggest stage.