Melbourne - Veteran Tomas Berdych reached the round of 16 for the 10th time at the Australian Open with a straight sets win over Juan Martin Del Potro on Saturday.
The 32-year Czech eliminated the 12th-seeded Argentine 6-3, 6-3, 6-2 in 2hr 16min on Hisense Arena.
Berdych, who has played in the semi-finals twice in Melbourne, will face Italian journeyman Fabio Fognini in their first Grand Slam match in Monday's fourth round.
Berdych served up 20 aces, broke serve seven times and hit 52 winners with 28 unforced errors.
"I think I was well prepared and I stuck with my plan and I'm glad as I can stand here as a winner today," Berdych said on court.
"Juan Martin is a great competitor and I'm glad he is back after all the injuries that he's had. Tennis was missing him and it's great that he's back."
Results from the Australian Open on Saturday:
Dominic Thiem (AUT x5) bt Adrian Mannarino (FRA x26) 6-4, 6-2, 7-5
Tennys Sandgren (USA) bt Maximilian Marterer (GER) 5-7, 6-3, 7-5, 7-6 (7/5)
Marton Fucsovics (HUN) bt Nicolas Kicker (ARG) 6-3, 6-3, 6-2
Fabio Fognini (ITA x25) bt Julien Benneteau (FRA) 3-6, 6-2, 6-1, 4-6, 6-3
Chung Hyeon (KOR) bt Alexander Zverev (GER x4) 5-7, 7-6 (7/3), 2-6, 6-3, 6-0
Tomas Berdych (CZE x19) bt Juan Martn Del Potro (ARG x12) 6-3, 6-3, 6-2
Karolina Pliskova (CZE x6) bt Lucie Safarova (CZE x29) 7-6 (8/6), 7-5
Madison Keys (USA x17) bt Ana Bogdan (ROM) 6-3, 6-4
Simona Halep (ROM x1) bt Lauren Davis (USA) 4-6, 6-4, 15-13
Caroline Garcia (FRA x8) bt Aliaksandra Sasnovich (BLR) 6-3, 5-7, 6-2
Naomi Osaka (JPN) bt Ashleigh Barty (AUS x18) 6-4, 6-2
Barbora Strycova (CZE x20) bt Bernarda Pera (USA) 6-2, 6-2
Angelique Kerber (GER x21) bt Maria Sharapova (RUS) 6-1, 6-3