Melbourne - Germany's Alexander Zverev ended the hot streak of his close friend Andrey Rublev of Russia to reach the Australian Open quarter-finals for the first time on Monday.
The seventh seed broke once in each set for a clinical 6-4, 6-4, 6-4 win in just 1 hour and 37 minutes to go into a match-up with Stan Wawrinka, the powerful Swiss who beat Russia's Daniil Medvedev.
Zverev retains his 100 percent record over Rublev, who came into the match on a 15-match winning run including titles in Doha and Adelaide earlier this month.
Results on day eight of the Australian Open Grand Slam at Melbourne Park on Monday (x denotes seeding):
Dominic Thiem (AUT x5) bt Gael Monfils (FRA x10) 6-2, 6-4, 6-4
Stan Wawrinka (SUI x15) bt Daniil Medvedev (RUS x4) 6-2, 2-6, 4-6, 7-6 (7/2), 6-2
Alexander Zverev (GER x7) bt Andrey Rublev (RUS x17) 6-4, 6-4, 6-4
Anett Kontaveit (EST x28) bt Iga Swiatek (POL) 6-7 (4/7), 7-5, 7-5
Simona Halep (ROU x4) bt Elise Mertens (BEL x16) 6-4, 6-4
Garbine Muguruza (ESP) bt Kiki Bertens (NED x9) 6-3, 6-3
Anastasia Pavlyuchenkova (RUS x30) bt Angelique Kerber (GER x17) 6-7 (5/7), 7-6 (7/4), 6-2