• US 18-year-old dismantles Putintseva in dazzling win

• Alcaraz to face De Minaur in men’s quarter-finals

Iva Jovic became the youngest American woman to reach the quarter-finals of the Australian Open since Venus Williams in 1998, by dismantling the Kazakhstani veteran Yulia Putintseva 6-0, 6-1 on Sunday.

At 18, Jovic arrived in Melbourne as the youngest player inside the top 100 and the 27th seed has dominated all opposition, rolling through her four matches without dropping a set. Jovic’s third-round win against the No 7 seed, Jasmine Paolini, was the first top-20 win of her career. Still, Jovic rejected the notion that she is swinging freely with nothing to lose.

• World No 1 claims 7-6 (6), 6-4, 7-5 victory over 19th seed

• Player been making significant changes to service motion

Carlos Alcaraz spent the final 52 minutes of his fourth-round match at the Australian Open chasing down his prey, determined to convert his two-set lead into a straightforward win against Tommy Paul.

As he worked hard to secure the decisive break in set three, Alcaraz put together a flawless serving performance. He won 86% of his first serve points in the set, landing 76% of his first serves. He did not even come close to facing a break point, losing just five service points in total. Alcaraz, the world No 1, closed out his 7-6 (6), 6-4, 7-5 win over the 19th seed Paul with an unreturned serve. He will play Australian Alex de Minaur in the quarter-finals.

Extreme heat wreaked havoc on Australian Open schedule but tennis has changed its ways of dealing with the sun

Even before the first set and first hour of his match elapsed, Tomas Machac had asked the umpire for the tournament doctor, trainer and pickle juice, the drink du jour for tackling cramps. Those preventive measures taken in the intense early stages of his third-round tussle with Lorenzo Musetti proved to be sensible, for the pair would spend a brutal four hours, 25 minutes on court.

Four hours of that took place inside an open John Cain Arena, a furnace in suffocating heat. “We knew today was going to be really, really hot,” Musetti said. “I think I managed well to finish the match without cramping.”