Serena Williams Injures in Quater Final Match

Serena Williams was up a set and a break in her Australian Open quarterfinal against 19-year-old American Sloane Stephens. Then, in a span of 25 minutes, she lost her serve, hurt her back while trying to avoid contact with the net, took her second injury timeout of the tournament, came away with a limp, could barely get her first serve over 90 mph, dropped her first set since the U.S. Open and went down 2-1 in the decider.Stephens went on to win the match, 3-6, 7-5, 6-4. She became the first American player younger than Serena to ever beat ber.It will be the first Grand Slam semifinal appearance for the Florida native.Serena entered the match with only one loss since May.After the match, she was asked about the incident. She answered with a smile."It made me happy, unfortunately."

Serena receives treatment during her quarterfinal match against  Sloane Stephens at the Australian Open  on Wednesday, Jan. 23, 2013