Defending champion Jamie Murray reached a third US Open mixed doubles final with a narrow semi-final victory.
The Briton and his American partner Bethanie Mattek-Sands beat American duo Christina McHale and Christian Harrison in a championship tie-break, coming through 6-4 2-6 10-8.
Murray, 32, will now defend the title he won last year with Martina Hingis.
Earlier on Wednesday, Murray and Bruno Soares were knocked out of the men's doubles in the quarter-finals.
The 2016 champions and fourth seeds were shocked by unseeded pair Radu Albot and Malek Jaziri, losing 7-5 6-4.
Murray and Mattek-Sands will play Poland's Alicja Rosolska and Croatia's Nikola Mektic in Saturday's mixed final.
"I'm really excited to win - to lose both matches would have been tough," said Murray.
"But the chance to get into a Grand Slam final again was a big motivation for me and I'm really looking forward to the match."