Washington - Australians Alex de Minaur and Bernard Tomic captured straight-set victories on Thursday to advance into a quarter-final meeting at the ATP Atlanta Open.
Third-seeded De Minaur dispatched American Bradley Klahn 6-4, 6-4, after only 67 minutes, dropping only two points on his first serve without facing a break point in the match.
The world number 34 booked a first-ever ATP match-up Friday against 106th-rated compatriot Tomic, who eliminated Aussie Matthew Ebden 6-4, 7-6 (7/3).
Tomic seeks his fifth ATP title after wins last year at Chengdu, the Colombia Open in 2014 and 2015 and 2013 in Sydney.
De Minaur seeks a second title after hoisting his first in January at Sydney after losing there in the 2018 final.
The winner of the Aussie showdown will face either Britain's Daniel Evans or American Reilly Opelka in the semi-finals.
In other second-round matches Thursday, US second seed Taylor Fritz beat countryman Kevin King 6-2, 6-3 and French eighth seed Ugo Humbert lost to Serbia's Miomir Kecmanovic 6-2, 6-2.
Results on Thursday from the ATP tournament in Atlanta, Georgia (x-denotes seeding):
Bernard Tomic (AUS) bt Matthew Ebden (AUS) 6-4, 7-6 (7/3)
Alex de Minaur (AUS x3) bt Bradley Klahn (USA) 6-4, 6-4
Miomir Kecmanovic (SRB) bt Ugo Humbert (FRA x8) 6-2, 6-2
Taylor Fritz (USA x2) bt Kevin King (USA) 6-2, 6-3