ATP wrap: John Isner makes good Atlanta start; Diego Schwartzman strong in Hamburg

John Isner made a winning start to his bid for a fifth Atlanta Open title, beating Alex de Minaur 6-3 6-2.

The defending champion, who also won it in 2013, 2014, and 2015, was absolutely dominant throughout and will now face Mischa Zverev in the quarter-finals.

.@JohnIsner 🇺🇸 wins 6-3, 6-2 against @alexdeminaur 🇦🇺. Our four-time champ makes his ‘18 debut at the #AtlantaOpen with an impressive start. #USOpenSeries pic.twitter.com/cXtFCwN3h7

— BB&T Atlanta Open (@BBTatlantaopen) July 26, 2018

Zverev, older brother of ATP Tour rival Alexander, was a comfortable 6-4 6-2 winner over Mikhail Youzhny.

Third-seed Chung Hyeon is also safely through to the last eight after overcoming Taylor Fritz 64 7-6, and he’ll face eighth seed Ryan Harrison, who beat Lukas Lacki in three.

In Hamburg, second seed Diego Schwartzman continued his return to form with a routine 6-2 6-2 win over German qualifier Daniel Masur.

However Gael Monfils is out after a dismal 6-1 7-5 defeat to Leonardo Mayer, and eighth seed Fernando Verdasco crashed out against Thiago Monteiro.