Briton Joe Salisbury and USA's Rajeev Ram beat Chris Eubanks and Mackenzie McDonald to reach the US Open men's doubles semi-finals and remain on track for a second successive Grand Slam.
The Americans, at times, were overawed by the volleying of the Australian Open champions, who twice broke the serve of McDonald in the opening set.
Salisbury was broken in the next set but the third seeds broke back before securing a 6-2 7-6 (7-5) win.
Their semi-final is on Tuesday.
They will play either eighth seeds Wesley Koolhof and Nikola Mektic or Belgian pair Sander Gille and Joran Vliegen.
Salisbury and Ram began their partnership at the start of the 2019 season and have won three titles.