American Peyton Stearns defeated Tunisia's Ons Jabeur 7-6, 6-4 in the first round of the Dubai Duty Free Tennis Championships on Monday.
Stearns was down a break at 5-4 in the first set before collecting a straight-sets win over former World No. 2 Jabeur.
Elsewhere, qualifier Moyuka Uchijima notched the first Top 30 win of her career with a 6-3, 6-3 defeat of 2022 champion Jelena Ostapenko, while McCartney Kessler defeated Qatar Open champion Amanda Anisimova 6-2, 6-3 in an all-American first round clash.
Former world no. 1 Victoria Azarenka came from a set and 5-2 down, then 3-0 down in the decider, to defeat Anhelina Kalinina 2-6, 7-6, 6-4, while Denmark's Clara Tauson saved four set points in the first-set tiebreak en route to defeating Rebecca Sramkova 7-6, 6-0.
In other first round matches, wild card and 2024 semifinalist Sorana Cirstea cruised past No. 10 seed Daria Kasatkina 6-1, 6-4, while Marta Kostyuk registered a 6-3, 6-4 win over qualifier Katerina Siniakova, and Eva Lys overcame Irina-Camelia Begu 5-7, 7-5, 6-3.
There were also wins for Anastasia Potapova who crushed No. 13 seed Beatriz Haddad Maia 6-3, 6-0, and 11th seed Diana Shnaider who eased past Magdalena Frech 6-2, 6-2.

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
