Katie Volynets of the US plays a forehand return to Zhang Shuai of China (not in photograph) during their third round match at the Australian Open tennis championship in Melbourne, Australia, on Jan 21, 2023. (PHOTO / AP)

Down 5-0 and a match point in the third set, the United States' Katie Volynets rallied to upset third-seeded Anastasia Potapova of Russia 5-7, 6-2, 7-5 on Wednesday in the second round of the ATX Open in Austin, Texas.

Volynets heated up while winning the last seven games, as she lost just one point total in the final three games. The result moves the 21-year-old into a WTA Tour quarterfinal for the first time.

Up next for Volynets is a matchup against hometown favorite Peyton Stearns, who won the 2022 NCAA women's singles championship for the University of Texas. Stearns downed Sweden's Mirjam Bjorklund 6-3, 7-5 in second-round action.

Fifth-seeded Zhu Lin of China registered a 7-6 (4), 2-6, 6-3 win over Canada's Rebecca Marino, and Belgium's Ysaline Bonaventure topped Russia's Kamilla Rakhimova 7-6 (2), 1-6, 6-3, at Abierto GNP Seguros in Mexico

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Abierto GNP Seguros

Third-seeded Donna Vekic of Croatia needed just 80 minutes to rout the United States' Emma Navarro 6-3, 6-2 in the second round in Monterrey, Mexico.

Vekic put just 48 percent of her first serves in play, but she prevailed by picking on Navarro's second serve, winning 14 of 18 points. Vekic also saved nine of the 11 break points she faced.

Fifth-seeded Zhu Lin of China registered a 7-6 (4), 2-6, 6-3 win over Canada's Rebecca Marino, and Belgium's Ysaline Bonaventure topped Russia's Kamilla Rakhimova 7-6 (2), 1-6, 6-3.

READ MORE: China's Zhu Lin clinches first WTA tour singles title at Thailand Open

In the last match of the night, Slovakia's Anna Karolina Schmiedlova was scheduled to oppose the United States' Caroline Dolehide.