American Jessica Pegula reached her second straight US Open semi-final with a clinical 6-3 6-3 win over twice Grand Slam champion Barbora Krejcikova on Tuesday, in the first match of the day on Arthur Ashe Stadium.
Fourth-ranked Pegula had a dreadful run-up to the year's final major but has flipped the script in New York, where she has yet to drop a set and fired off 17 winners to beat the unseeded Czech.
Krejcikova recovered from injuries earlier this year and saved eight match points in a fourth-round thriller to reach the final eight but ran out of gas against the 2024 runner-up.
Pegula will next play the winner of the match later on Tuesday between the defending champion and world number one Aryna Sabalenka and unseeded Czech Marketa Vondrousova.

Norris unfazed by crowd boos after winning in Mexico
Mbappe and Bellingham strike as Real Madrid edge Barcelona 2-1 in fiery El Clasico
Brazilian teen Fonseca beats Fokina to win biggest career title in Basel
Arsenal go clear after win over Palace, Man City slip up at Villa
Brook's defiant ton in vain as New Zealand beat England
