Collins needed exactly two hours to defeat Badosa on Friday night.

American Danielle Collins battled into the semifinals of the WTA 500 event in San Diego on Friday night, defeating Paula Badosa in a tight two-setter, 7-6 (5), 6-4.

And it was a major milestone for Collins: the 100th WTA win of her career.

After a sparkling college tennis career—she was a two-time NCAA singles champion, graduating from the University of Virginia in 2016—Collins recorded the first eight tour-level wins of her career as a 24-year-old during a breakthrough four weeks in March 2018, reaching the fourth round of Indian Wells (as a No. 117-ranked wild card) and the semifinals of Miami (as a No. 93-ranked qualifier).

She’s notched 92 more wins in the four and a half years since then.

COLLINS’ WIN-LOSS RECORDS BY YEAR (WTA events only):
2014: 0-1
2015: 0-0
2016: 0-1
2017: 0-1
2018: 17-17
2019: 18-18
2020: 10-6
2021: 37-15
2022: 18-9

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Collins' victory over Badosa was the 10th Top 10 win of her career, and all of those wins have come on hard courts in the U.S. or Australia.

Collins' victory over Badosa was the 10th Top 10 win of her career, and all of those wins have come on hard courts in the U.S. or Australia.

Collins’ victory over the No. 4-ranked Badosa was also the milestone 10th Top 10 win of her career, and there’s a major pattern emerging—all of those Top 10 wins have come on hard courts, and they’ve all come in either the U.S. or Australia.

COLLINS’ CAREER TOP 10 WINS (10):
d. No. 8 V.Williams, 6-2, 6-3, in 2018 Miami QFs
d. No. 2 Kerber, 6-0, 6-2, in 2019 Australian Open 4th Rd
d. No. 5 Svitolina, 6-1, 6-1, in 2020 Brisbane 1st Rd
d. No. 7 Bencic, 6-3, 6-1, in 2020 Adelaide QFs
d. No. 6 Pliskova, 7-6 (5), 7-6 (3), in 2021 Melbourne-1 3rd Rd
d. No. 1 Barty, 6-3, 6-4, in 2021 Adelaide 2nd Rd
d. No. 9 Swiatek, 6-4, 6-1, in 2022 Australian Open SFs
d. No. 10 Jabeur, 6-2, 6-4, in 2022 Miami 4th Rd
d. No. 10 Garcia, 6-2, 7-6 (4), in 2022 San Diego 1st Rd
d. No. 4 Badosa, 7-6 (5), 6-4, in 2022 San Diego QFs

And to exemplify just how difficult Collins’ game is to handle when she’s on that day, she won all 10 of those matches against Top 10 players in straight sets.