The Cincinnati Open will host its first all-American women's final in 56 years after Jessica Pegula and Coco Gauff won their respective semi-finals. Fourth seed Gauff cruised home in her clash with Marie Bouzkova, eclipsing the Czech 6-4 6-1, while third seed Pegula earned her spot by toppling defending champion Iga Swiatek 7-5 4-6 6-4. The last Cincinnati Open final to feature two American women came in 1970 when Billie Jean King defeated Rosie Casals.

Fellow American Tommy Paul also reached the men's final, where he will face Arthur Fils. Pegula rallied from a break down in the deciding set to defeat six-time Grand Slam champion Iga Swiatek in her semi-final. World No 3 Pegula and seventh seed Swiatek traded breaks early in the opening set before rain briefly interrupted play with the score level at 1-1.

Swiatek clawed her way back, breaking to level at 4-4 before moving ahead, but with the set locked at 5-5, Pegula capitalised on a Swiatek double fault to break for 6-5 before the Pole sent the simplest of smashes into the net to hand Gauff the opener. In the second set, Swiatek was more aggressive, breaking in the sixth game to take a 4-2 lead. Pegula broke back and managed to level the contest, but the former world No 1 levelled things up when Pegula missed a forehand return.

Pegula refused to fade after Swiatek moved 3-1 ahead in the decider. The American levelled at 4-4, earned the decisive break in the next game and then served out for a memorable victory. Gauff then broke twice more in the second set, capitalising on a catalogue of Bejlek unforced errors to seal victory in 76 minutes.

Paul produced a commanding 67-minute display to sweep aside seventh seed Lorenzo Musetti 6-3 6-4 on Saturday and secure his place in the men's final in Cincinnati. Fils, who won the Barcelona Open in April, maintained his momentum in the second set, breaking serve in the opening game.