07:54 CET - Fourth seed Amanda Anisimova is through to the third round after an emphatic 6-1, 6-4 triumph over Czechia's Katerina Siniakova.
Linda Noskova, Elise Mertens, Xinyu Wang and Peyton Stearns have also advanced on the women's side of the tournament.
06:00 CET - Novak Djokovic progresses against qualifier Francesco Maestrelli 6-3, 6-2, 6-2. It was a solid performance from the fourth seed, who won 86% of his first serve points to make it through to the third round.
05:20 CET - It is a big win for Ethan Quinn, who takes out Hubert Hurkacz 6-4, 7-6 (5), 6-1 in two hours and 16 minutes. The 21-year-old saved all eight break points faced as he now moves into the third round.
04:35 CET - Ben Shelton enjoyed victory over local hero Dane Sweeny 6-3, 6-2, 6-2 as the American played a solid match to progress without much fuss. The number eight seed hit 19 aces, while he also did not face a break point on his serve.
Lorenzo Mussetti also moved on in a relatively comfortable fashion, taking out fellow Italian Lorenzo Sonego 6-3, 6-3, 6-4. Seeded fifth in the tournament, Mussetti created 23 break chances, converting six to move through to the third round.
04:20 CET - It is a straight sets win for Karolina Pliskova, who got past Janice Tjen 6-4, 6-4 to advance to the third round.
03:50 CET - A few more results over the last hour saw Jakub Mensik defeat Rafael Jodar 6-2, 6-4, 6-4, while Karen Khachanov topped Nishesh Basavareddy 6-1, 6-4, 6-3. Despite a great start to the year, Sebastian Baez's run in Melbourne is done early after falling 6-3, 1-6, 6-4, 6-3 to Luciando Darderi.
02:50 CET - Oksana Selekhmeteva produces an impressive upset, downing number 26 seed Paula Badosa 6-4, 6-4. Converting five of her 11 break point opportunities, the 101st ranked player in the world makes it to her first-ever third round at a major.
02:45 CET - Jessica Pegula is through to the third round of the Australian Open after a comfortable 6-0, 6-2 success against McCartney Kessler. Hitting 18 winners to just seven unforced errors, the sixth seeded American played a clean match to advance without any issues.
02:25 CET - Defending champion Madison Keys made it difficult for herself in the second set, but still managed to get past fellow American Ashlyn Krueger 6-1, 7-5. After cruising through the opening set in just 23 minutes, the number nine seed came from 5-2 down, winning the final five games to advance in straight sets.
23:30 CET - Good evening and welcome back to our Tennis Tracker, as the second-round action continues in Melbourne on Thursday!
Play gets underway at 01:00 CET, with defending women's champion Madison Keys facing compatriot Ashlyn Krueger, while Jessica Pegula, Amanda Anisimova and Linda Noskova also take to the court in the early hours of the morning.
On the men's side of the tournament, 10-time former champion Novak Djokovic comes up against Italy's Francesco Maestrelli at around 03:30 CET. Ben Shelton, Lorenzo Musetti and Stan Wawrinka are among the other standout names in action overnight.
Later on, in the night session, Jannik Sinner continues his title defence against home hope James Duckworth, while Iga Swiatek faces a tricky test in the shape of Marie Bouzkova.
Taylor Fritz, Elena Rybakina, Naomi Osaka and Casper Ruud are also in action from 08:00 CET onwards.
Check out the full men's schedule here and the full women's draw here.