Casper Ruud advances to National Bank Open quarter-finals
Rudd held off Agut after a mid-afternoon thunderstorm delayed play by just over an hour.
“It was a tough battle. The first two sets lasted 2 hours and 20 minutes,” Rudd said. “Good intensity and I felt it in my legs a bit. gave me time to breathe out and get some energy back in. I can thank the weather gods today, giving me a bit more time and energy.
Ruud will face sixth-seeded Felix Auger-Aliassime, the 22-year-old Montrealer who beat Britain’s Cameron Norrie 6-3, 6-4. Auger-Aliassime had 22 aces.
“It was a very convincing win,” Auger-Aliassime said. “I served very well but also felt like I was putting a lot of pressure on him every chance I had.”
Eighth-seeded Hubert Hurkacz of Poland also advanced, ousting Spain’s Albert Ramos-Vinolas 6-7(6), 6-2, 7-6(3). Nick Kyrgios beat fellow Australian Alex de Minaur 6-2, 6-3.
France’s No.17 seed Gael Monfils dropped out early in the second set of his match against British qualifier Jack Draper. Monfils, who trailed 6-2, 0-2, received treatment on his right ankle but was unable to continue.
In the night session, seventh-seeded Italian Jannik Sinner took on Spaniard Pablo Carreno Busta.