Jack Draper and Jessica Pegula wear dejected expressions after their loss to Iga Swiatek and Casper Ruud in the semifinals of the U.S. Open mixed doubles tournament at Arthur

Draper and American Jessica Pegula went into the event -- played for the first time in the week before the main tournament -- as the top seeds and eased through to the last four on Tuesday, with a run which included beating Emma Raducanu and Carlos Alcaraz in the first round.

Watch highlights as Emma Raducanu and Carlos Alcaraz are beaten 4-2 4-2 by Jack Draper and Jessica Pegula in the revamped US Open mixed doubles.

Jannik Sinner has withdrawn from the U.S. Open mixed doubles event, where he was going to partner Katerina Siniakova, a day after illness forced the world number one to retire five games into his Cincinnati Open final.

Follow live coverage of the U.S. Open mixed doubles Jannik Sinner has withdrawn from the U.S. Open mixed doubles, which begins Aug. 19 in New York. The men’s world No. 1 in singles retired after five games of his Cincinnati Open final against Carlos Alcaraz due to illness,