Speaking about Serena Williams' foot injury, Kim Clijsters confirmed that it was indeed serious. "I obviously saw her injury, but I didn't get the explanation," said Clijsters. "I saw the injury, so it's not something that she's making up or that it's a small cut or anything."

Asked whether injury was at the top or the bottom of the foot, Clijsters said it was "both feet," but would not give a more specific location. "I don't remember," she said. "I wasn't paying such close attention."