Bianca Andreescu claimed the biggest win of her career on Saturday, but the teenager's US Open triumph was just her latest over a top-10 player.
The 19-year-old Canadian beat Serena Williams in straight sets at Arthur Ashe Stadium for her first grand slam title.
Andreescu now holds an 8-0 record over top-10 players in her career, with each of those wins coming in 2019, showcasing her ability to step up against the best.
Omnisport takes a look at the teenager's top-10 wins.
2019 Auckland Open: defeated Caroline Wozniacki (1) 6-4 6-4
A qualifier facing the top seed, Andreescu stunned Wozniacki in Auckland in January. She was ranked 152nd in the world at the time.
2019 Indian Wells Open: defeated Elina Svitolina (6) 6-3 2-6 6-4
Andreescu put together a fine run on her way to a first WTA Tour title at Indian Wells, including saving nine of 10 break points in the final set in a semi-final win over Svitolina.
2019 Indian Wells Open: defeated Angelique Kerber (8) 6-4 3-6 6-4
A wildcard, Andreescu joined Williams (1999), Kim Clijsters (2005) and Naomi Osaka (2018) as the only unseeded champions at Indian Wells.
2019 Miami Open: defeated Angelique Kerber (8) 6-4 4-6 6-1
Less than a week after beating Kerber in the final at Indian Wells, Andreescu repeated the feat in Miami.
2019 Rogers Cup: defeated Kiki Bertens (5) 6-1 6-7 (7-9) 6-4
Andreescu's run in Toronto surely sparked hopes she could contend at Flushing Meadows, beginning with her last-16 victory over Bertens.
2019 Rogers Cup: defeated Karolina Pliskova (3) 6-0 2-6 6-4
Andreescu made it four straight three-set wins by overcoming Pliskova, again delivering in a key moment by breaking decisively in the ninth game of the decider.
2019 Rogers Cup: defeated Serena Williams (8) 3-1 ret.
It may not have been the way she wanted to win a title at home, but Andreescu was ahead in the final when Williams retired due to a back injury.
2019 US Open: defeated Serena Williams 6-3 7-5
She got another chance in New York and delivered an impressive display in front of a raucous crowd supporting the American great. After taking the first set, Andreescu saw Williams come from 5-1 down in the second, only to steady and close out her maiden major success.