Serena Williams suffers her 23-year-long career's worst loss

Twenty-three-time Grand Slam champion Serena Williams suffered the worst loss of her 23-year-long career after losing 6-1, 6-0 to Britain's Johanna Konta in the first round of the Silicon Valley Classic on Tuesday. The 36-year-old had never lost a match before where she did not win at least two games since turning a professional player in 1995.