Tennis-US Open underdogs Osaka, Auger-Aliassime storm into quarter-finals

Sep 1, 2025; Flushing, NY, USA; Naomi Osaka of Japan in action against Coco Gauff of the United States in the fourth round of the women’s singles at the US Open at Arthur Ashe Stadium in Billie Jean King National Tennis Center. Mandatory Credit: Mike Frey-Imagn Images

(Reuters) -The U.S. Open's Labour Day Monday largely belonged to the underdogs, as Naomi Osaka and Felix Auger-Aliassime delivered commanding performances that carried them back to Grand Slam quarter-finals after years in the wilderness.

Osaka looked every bit the four-time major champion while dismantling third seed Coco Gauff 6-3 6-2 in 64 minutes, making her first Flushing Meadows quarter-final in five years with a display that mixed power with poise at Arthur Ashe Stadium.