Hamburg, July 26: Alexander Zverev made home advantage count as he battled through to the quarter-finals of the German Tennis Championships with a straight-sets win over Federico Delbonis.
After a shock first-round exit at Wimbledon, world number five Zverev - featuring in the tournament in his hometown for the first time since 2016 - has rediscovered his form on clay.
He had to overcome a resilient opponent in Delbonis in humid conditions on Thursday (July 25), coming out on top 6-4 7-6 (7-2) to join world number four and top seed Dominic Thiem in the last eight.
Zverev will face Filip Krajinovic next, with the Serbian having beat 2016 champion Martin Klizan 6-7 (6-8) 7-5 6-1.
🇦🇹 Thiem v Rublev 🇷🇺— ATP Tour (@ATP_Tour) July 25, 2019
🇫🇷 Chardy v Basilashvili 🇬🇪
🇷🇸 Krajinovic v Zverev 🇩🇪
🇮🇹 Fognini v Carreno Busta 🇪🇸
Who's taking home the title in 2019? #HamburgOpen
Seventh seed Jan-Lennard Struff suffered a surprise defeat to Pablo Carreno Busta, who will meet Fabio Fognini next after the Italian beat Rudolf Molleker 7-5 6-4.
Meanwhile, the seeded players also dominated in the Swiss Open Gstaad - Roberto Bautista Agut, Dusan Lajovic, Joao Sousa and Pablo Andujar all progressing to the quarter-finals.
Bautista Agut, a runner-up at the tournament last year, saw off compatriot Jaume Munar 7-6 (9-7) 6-4, while third seed Lajovic required three sets to edge past Denis Istomin.
Sousa found victory easier to come by against Gian Marco Moroni, while Andujar saw off a second-set fightback from Taro Daniel to triumph 6-1 3-6 7-6 (7-2).