Briton Jamie Murray and Swiss Martina Hingis added the US Open title to their Wimbledon mixed doubles crown with victory over Michael Venus and Hao-Ching Chan at Flushing Meadows.
They prevailed 6-1 4-6 10-8 after their third-seeded opponents took the second set to force a championship tie-break.
They survived match point with Venus serving to Hingis before Murray swatted away the winning volley.
“I tried to find the best partner, she is an amazing player,” Murray said.
Despite being undefeated as a pair, they declined to confirm that they would definitely team up again with Hingis saying she would assess which tournaments she wants to play at the end of the season.
Hingis, who will also compete in Sunday’s women’s doubles final alongside Chan Yung-jan, now has 24 Grand Slam titles across singles and doubles.
Her first came as a 15-year-old in the 1996 Wimbledon women’s doubles, while this year marks the 20th anniversary of her US Open singles title, secured with victory over Venus Williams.
Scot Murray, who won the the men’s doubles title with Bruno Soares in New York last year, now has five Grand Slam titles.