Ukrainian 15-year-old Marta Kostyuk became the youngest player to reach the third round of a grand slam in over 20 years

Australian Open: Oldest Ivo Karlovic, youngest Marta Kostyuk enter third round

Croatia's sixth seed Marin Cilic advanced to the third round of the Australian Open with a straight-sets

Australian Open: Rafa Nadal storms to third round, so as Marin Cilic

Federer ignored his partner Belinda Bencic and continued the rally with his opponent Jack Sock of the USA for quite some time

Watch: Federer, Jack Sock upset other two women players during match

Tsonga will face either Australian 17th seed Nick Kyrgios or Serbia's Viktor Troicki in the third round

Australian Open: Tsonga races to third round, outplays Denis Shapovalov

Caroline Wozniacki defeated Jana Fett, 3-6, 6-2, 7-5

Australian Open: Caroline Wozniacki foils Jana Fett, enters second round

Venus Williams' Australian Open conqueror Belinda Bencic ran out of steam failing to keep the momentum going against qualifier Luksika Kumkhum

Australian Open: Elina Svitolina survives second round, Belinda Bencic exits

Karolina Pliskova donated $100 of her prize money to benefit sick children

Australian Open: Pliskova, Muguruza, Konta enter second round

The 86th-ranked Slovakian beat the 22nd seeded Raonic 6-7 (5/7), 7-5, 6-4, 7-6 (7/4)

Australian Open: Milos Raonic crashes, drives out of Slam

The three-time Grand Slam winner downed Ricardas Berankis 6-3, 6-4, 2-6, 7-6 (7/2) on Hisense Arena

Australian Open: Wawrinka, Zverev, Djokovic enter second round

Sharapova defeated Tatjana Maria 6-1, 6-4 of Germany and likely to meet Anastasija Sevastova of Latvia or American Varvara Lepchenko in the second round

Australian Open: Sharapova enters second round after beating Tatjana Maria

Rafael Nadal thrashed Victor Estrella Burgos, 6-1, 6-1, 6-1, to play Argentina's Leonardo Mayer in the next round

Australian Open: Rafa through to second round

Australian Open: Jelena Ostapenko beats Francesca Schiavone in first round

Grigor Dimitrov defeated Dennis Novak in straight sets 6-3, 6-2, 6-1 in 98 minutes

Australian Open: Dimitrov beats Novak in opener

Kerber defeated Australia's Barty in straight sets, 6-4 6-4 after an hour and 11 minutes long rally

Angelique Kerber beats Ashleigh Barty to win Sydney International

Norman was a friend, even closer than a friend and he was more sad than angry at him, said Wawrinka

Coach Magnus Norman's exit upsets Stan Wawrinka

The Spanish fifth seed Roberto Bautista Agut claimed his second Auckland Open title with a win over Juan Martin del Potro in the finals

Tennis player Roberto Bautista claims Auckland title after defeating Juan del Porto

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