Aryna Sabalenka has advanced to the quarterfinals at the Australian Open, where she's three wins from achieving something no woman has done since the 1990s. The two-time defending champion extended her winning streak at Melbourne Park to 18 matches with a 6-1, 6-2 win over 14th-seeded Mirra Andreeva to open play Sunday on Rod Laver Arena. Martina Hingis, from 1997 to 1999, was the last woman to win three straight Australian Open singles titles.