Australian Open 2017: 'Birthday-Girl' Angelique Kerber advances to third round, beats Carina Witthoeft in a hard-fought battle
The defending champion, who turned 29, battled through 6-2, 6-7 (3/7), 6-2 and will next face either Kristyna Pliskova or Irina-Camelia Begu.
Jan 18, 2017, 10:50 AM IST