Jannik Sinner had a notable gesture when he welcomed Darren Cahill's father at his final training session before the Australian Open semifinals in a classy move featured in a new Daily Dose of Social Media.

It's an up-and-down day for favorites and the husband-and-wife duo of Gaël Monfils and Elina Svitolina wo their singles matches.

The final match of the day saw American Learner Tien, playing in his first major outside of the U.S. Open, upset No. 5 seed Daniil Medvedev in a five-set classic, 6-3, 7-6, 6-7, 1-6, 7-6, that ended at 2:54 a.m. local time. Medvedev had reached three of the past four Australian Open finals, but could not fend off a ferocious Tien.

The World Anti-Doping Agency (WADA) said on Monday it would not lodge an appeal to the Court of Arbitration for Sport (CAS) in the case of Iga Swiatek after the former world number one tested positive for prohibited substance trimetazidine (TMZ).

Plus, Ben Shelton gets the chance to end the American men's drought at a Grand Slam when he faces Jannik Sinner in the semis

The quarterfinals are underway at Melbourne Park, as rumours abound about Jannik Sinner's health ahead of his clash with Alex de Minaur. Follow live.

A missed double-bounce call, an unseeded Italian hits one of the shots of his life and an all-Australian final is locked in. Here are five quick hits from day 11 of the Australian Open.

Sabalenka, meanwhile, won against her good friend, Spaniard Paula Badosa, in her own semi-final earlier in the night. American tennis player Madison Keys has reached her first Australian Open decider, saving a match point before completing a stunning upset of second seed Iga Świątek in a gripping semi-final battle.

Former Wimbledon champion Elena Rybakina joined Swiatek in the last 16 with a 6-3 6-4 win over Dayana Yastremska, but only after receiving treatment on her back, while eighth seed Emma Navarro and ninth seed Daria Kasatkina also advanced.

Australian Open has been intense, with the men's and women's singles tournaments heating up. Here's what to know about the current bracket.

Aryna Sabalenka offers a shopping trip to buy back a friendship, an umpire gets caught singing during a set break and identical twins make it look like you're seeing double. Here are the quick hits from day 12 of the Australian Open.