Aryna Sabalenka matched her best Grand Slam showing by advancing to a possible fourth-round showdown against Serena Williams at the Australian Open

Top-ranked Novak Djokovic takes on American Taylor Fritz in one of the high-intensity matches set on the Australian Open’s fifth day

Sofia Kenin’s bid to repeat as champion at the Australian Open ended when she lost in the second round to big-serving Kaia Kanepi 6-3, 6-2

Feliciano Lopez doesn’t remember much about his first Grand Slam match

Former No. 1 Karolina Pliskova has advanced to the third round at the Australian Open by beating American Danielle Collins 7-5, 6-2

Eight-time Australian Open champion Novak Djokovic fended off Frances Tiafoe 6-3, 6-7 (3), 7-6 (2), 6-3 to reach the third round at Melbourne Park

Naomi Osaka beat another potentially difficult opponent with relative ease at the Australian Open, dropping just five games in a 6-2, 6-3 win over former top-five player Caroline Garcia

Top seeded Novak Djokovic fended off a spirited challenge from Frances Tiafoe in the second round of the Australian Open, beating the young American 6-3, 6-7 (3), 7-6 (2), 6-3 in a 3 1/2-hour match

Fifth-seeded Stefanos Tsitsipas capped the Day 2 program on Rod Laver Arena by routing French veteran Gilles Simon 6-1, 6-2, 6-1

Sofia Kenin’s Australian Open title defense got off to a bit of a rocky start before she righted herself and pulled out a two-set win