Australian Open tennis: Fifth seed Dominic Thiem advances to fourth round

Dominic Thiem entered the fourth round of the Australian Open tennis tournament with a win over Adrian Mannarino 6-4, 6-2, 7-5 at Margaret Court Arena.

Austria’s Dominic Thiem reached the round of 16 at the Australian Open tennis with a straight sets win over Frenchman Adrian Mannarino on Saturday.

Dominic Thiem defeated Adrian Mannarino 6-4, 6-2, 7-5 in the third round of the Australian Open tennis tournament. (AP)

Thiem downed the 26th-seed 6-4, 6-2, 7-5 in 2hr 8min at Margaret Court Arena.

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The Austrian has now reached the round of 16 at his last six Grand Slams.

Thiem showed no ill-effects of his five set win over American qualifier Denis Kudla in the second round in fierce heat on Thursday.

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The victory took his record over Mannarino to 7-0.

Sandgren shines

American Tennys Sandgren won only his third Grand Slam match to reach the round of 16 at the Australian Open.

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The 97th-ranked Sandgren got past German Maxmilian Marterer 5-7, 6-3, 7-5, 7-6 (7/5) in just under three hours on Show Court Two.

He will now line up against Thiem on Monday for a place in the quarter-finals.

Sandgren upset former champion Stan Wawrinka in straight sets in the third round in the biggest win of his career on Thursday.