The Czech team of Karolina Muchova and Jakub Mensik won the US Open mixed doubles Wednesday, saving two match points in a nervy semi-final and then pulling through in a tight final. The pair survived a second-set pummeling in the championship decider in New York to edge Belinda Bencic of Switzerland and Flavio Cobolli of Italy, 6-3, 1-6, 10-6. 

Mensik, a singles semi-finalist at this year's French Open, sealed the triumph with a searing ace to the backhand corner. Another Mensik ace saved one of two match points earlier in the evening when the Czech pair edged the Russians Mirra Andreeva and Andrey Rublev, 5-4, 3-5, 11-9. The back-to-back wins secured the first Grand Slam title for both Mensik and Muchova, who lost a heartbreaking Wimbledon singles final in July in three sets to fellow Czech, Linda Noskova.