By Karen Price | Jan. 23, 2020, 10:58 a.m. (ET)

Tommy Paul plays a volley at the 2020 Adelaide International at Memorial Drive on Jan. 17, 2020 in Adelaide, Australia.

 

Teenager Coco Gauff continues to impress with her fearlessness and fight while Serena Williams, Madison Keys and Sofia Kenin are also among the six U.S. women who secured their third-round matchups in the Australian Open.

Meanwhile, a pair of U.S. men also showed they aren’t backing down, as unseeded Tommy Paul and Tennys Sandgren joined the ranks of those moving forward after the second round.

Paul, who was the 2015 French Open junior champion and is on a bit of a comeback trail, reached the third round of the Australian Open in a five-set upset over No. 18 Grigor Dimitrov of Bulgaria. The match lasted 4 hours, 19 minutes and Paul had to fight back from the verge of losing in the fifth set. Two points from going home, he won the next four points to break Dimitrov and register a 6-4, 7-6(6), 3-6, 6-7(3), 7-6(3) victory. 

Sandgren, who won his first ATP title last year and was a quarterfinalist at the Australian Open in 2018, also scored an upset, beating No. 8 Matteo Berrettini of Italy in five sets. He’ll next face countryman Sam Querrey, who beat Lithuania’s Ricardas Berankis 7-6(2), 4-6, 6-4, 6-4.

No. 19 John Isner is also moving along after beating Alejandro Tabilo of Chile in straight sets, 6-4, 6-3, 6-3, and No. 29 Taylor Fritz defeated South Africa’s Kevin Anderson after dropping the first two sets, winning in 4-6, 6-7(5), 7-6(4), 6-2, 6-2.

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Michael Mmoh was the only U.S. man to fall in the second round, losing to No. 9 Roberto Bautista Agut of Spain 5-7, 6-2, 6-4, 6-1.

Gauff found herself in an 0-3 deficit in the third set to decide her match against Romania’s Sorana Cirstea, but that pressure only seemed to make her play better in a 4-6, 6-3, 7-5 victory. The 15-year-old now faces No. 3 and defending Australian Open champion Naomi Osaka of Japan, to whom she lost in the 2019 US Open. 

No. 8 Williams made quick work of Tamara Zidansek of Slovenia, winning 6-2, 6-3, and No. 10 Keys worked past Arantxa Rus of the Netherlands 7-6(3), 6-2.   

No. 18 Alison Riske also advanced, easily beating Zhu Lin of China 6-3, 6-1 to move into the third round for the third time at the Australian Open. Kenin upended Ann Li 6-1, 6-3 in an all-American matchup, and Cici Bellis upset No. 20 Karolina Muchova of the Czech Republic 6-4, 6-4.

The road ended for four other U.S. women this week, however.

Caty McNally lost to Shuai Zhang of China, 6-2, 6-4, and Taylor Townsend fell to No. 20 Anastasia Pavlyuchenkova of Russia, 7-5, 7-6(1). No. 26 Danielle Collins lost to Kazakhstan’s Yulia Putinseva 6-4, 2-6, 7-5, and Lauren Davis lost to No. 5 Elina Svitolina of Ukraine, 6-2, 7-6(6).

Karen Price is a reporter from Pittsburgh who has covered Olympic and Paralympic sports for various publications. She is a freelance contributor to TeamUSA.org on behalf of Red Line Editorial, Inc.