MELBOURNE, Australia (AP) - Serena Williams' long winning streak has come to an end in an upset 4-6, 6-3, 6-3 loss to Ana Ivanovic in the fourth round of the Australian Open.
Williams hadn't lost a match since August, one of only four defeats in 2013, and came into the fourth round with 25 straight wins. It was her 70th match at Melbourne Park, a record in the Open era, and she set the mark for most match wins ever at the Australian Open with her third-round victory.
Ivanovic hadn't taken a set off Willliams in their previous four matches.
The other quarterfinal will feature two women who'll turn 32 next month, with two-time finalist finalist Li Na beating No. 22 Ekaterina Makarova 6-2, 6-0 and No. 28 Flavia Pennetta upsetting No. 9 Angelique Kerber 6-1, 4-6, 7-5.