Alfie Hewett and Andy Lapthorne won two US Open titles apiece, sealing both the singles and doubles crowns in their respective divisions in New York.
Hewett, 21, retained his wheelchair singles title, beating Frenchman Stephane Houdet 7-6 (11-9) 7-6 (7-5) before winning the doubles title with fellow Briton Gordon Reid.
Lapthorne, 28, beat Australian Dylan Alcott 6-1 6-0 in the quad singles.
He then teamed up with Alcott to win the quad doubles title.
Lapthorne’s singles title was his first at Flushing Meadows since 2014.
In winning, he ended Alcott’s unbeaten record for the season – having lost to him in the Wimbledon final – and his quest for the calendar Grand Slam.
“It’s massive to beat Dylan. To do it 6-1 6-0 is crazy. I’m massively pleased,” Lapthorne told Amazon Prime.
“He’s one of the best players in our division, he’s world number one for a reason.
“The whole week I’ve been trying to put my game on the court and hope it matches up, and today it did, so I’m really pleased.”
Lapthorne and Alcott beat Americans David Wagner and Bryan Barten 6-7 (5-7) 6-1 10-6 in the quad doubles final.
In the wheelchair doubles, Hewett and Reid defeated Japan’s Shingo Kunieda and Argentina’s Gustavo Fernandez 1-6 6-4 11-9 to retain the title for the third successive year.
“Winning [the singles title] means lot to me,” Hewett told BBC Radio 5 Live. “It’s not been the year I would have hoped for, my ranking has dropped and my performances haven’t been as high as they were.
“To go into this one having not had any warm-up tournaments and not dropping a set all week, it’s something that I didn’t think would actually happen.
“There’s something about coming here every year, I just manage to find some of my best tennis.”