HIGHLIGHTS-Tennis-Australian Open day six

Highlights of Saturday's sixth day of the Australian Open, the first Grand Slam tournament of the year (all times GMT):

0620 RAONIC ROLLS INTO LAST 16

Canada's Milos Raonic produced a serving masterclass, firing 23 aces and winning 85 percent of points on his first serve, to swat aside Frenchman Pierre-Hugues Herbert 6-4 6-4 7-6(6).

0610 KEYS SENDS MERTENS PACKING

American Madison Keys secured a spot in the last 16 for the fourth time by beating Belgian Elise Mertens 6-3 6-2.

The 2017 U.S. Open runner-up will meet sixth seed Elina Svitolina for a place in the quarter-finals.

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Serena motors into fourth round in Melbourne

Osaka survives Hsieh scare to reach fourth round

Nishikori beats Sousa to move into fourth round

Federer serves up Fritz blitz to reach last 16

Nadal subdues local hope de Minaur in third round clash

Birthday girl Kerber completes Australian horror show

Khachanov "ashamed" after early exit from Australian Open

Tsitsipas hopes to be mentally ready for 'legend' Federer

Kyrgios is better on court than behind mike, says Federer

Sizzling Sharapova back in Grand Slam contention

Dimitrov happy to fly under the radar in Melbourne

Australian Open order of play on Saturday

Australian Open order of play on Sunday

0440 NISHIKORI GETS MUCH-NEEDED QUICK WIN

After surviving two five-setters, Japan's Kei Nishikori cruised past Joao Sousa 7-6(6) 6-1 6-2 to reach the fourth round for the seventh time.

0435 SERENA EASES INTO LAST-16

Seven-time Melbourne champion Serena Williams made light work of Dayana Yastremska, beating the Ukrainian 6-2 6-1 in the third round.

Serena, chasing a record 24th Grand Slam title, will next face older sister Venus or world number one Simona Halep for a place in the quarter-finals.

0400 SEVASTOVA POWERS PAST WANG

Anastasija Sevastova, seeded 13th, broke Chinese number one Wang Qiang four times on her way to a convincing 6-3 6-3 victory.

The Latvian has returned to the second week at Melbourne Park for the first time in eight years and she will meet U.S. Open champion Naomi Osaka.

0345 MEDVEDEV RACES INTO SECOND WEEK

Brisbane finalist Daniil Medvedev fired 31 winners to ease past Belgian David Goffin 6-2 7-6(3) 6-3 and advance to the fourth round at a Grand Slam for the first time.

0315 SVITOLINA BEATS ZHANG IN THREE-SET THRILLER

Sixth seed Elina Svitolina rallied from 3-0 down in the final set to beat China's Zhang Shuai 4-6 6-4 7-5 in just under three hours on Rod Laver Arena.

0210 OSAKA SCORES COMEBACK WIN

Japanese fourth seed Naomi Osaka roared back from a set down to beat Taiwan's Hsieh Su-wei 5-7 6-4 6-1 on Margaret Court Arena.

The reigning U.S. Open champion has reached the fourth round at Melbourne Park for a second consecutive year. (Compiled by Hardik Vyas in Bengaluru; Editing by Peter Rutherford )

(This story has not been edited by Devdiscourse staff and is auto-generated from a syndicated feed.)