Defending champion Aryna Sabalenka battled through serving woes Wednesday to make the Australian Open third round, but it was a less-than-convincing display by the world number one. The Belarusian dropped serve three times and faced 11 break points before overcoming Spain's Jessica Bouzas Maneiro on Rod Laver Arena 6-3, 7-5, rattling off the last five games in a row. It was her 16th consecutive victory on Melbourne's centre court after back-to-back titles and a first round win over 2017 US Open champion Sloane Stephens.