Two were at Wimbledon and the other last year at the US Open against Naomi Osaka, which quickly devolved after Williams argued with chair umpire Carlos Ramos about a warning over receiving coaching signals. If she wins this championship, 20 years after she won her first of six titles at Flushing Meadows, the 37-year-old Williams would equal Margaret Court's record for most Grand Slam titles. A year after losing in US Open qualifying, Andreescu is the first teenager in the U.S. Open final since Caroline Wozniacki in 2009. She won her first two career titles this year at Indian Wells and Toronto, the latter when Williams had to stop playing in the final because of back spasms. Andreescu is 33-4 this season.
Saturday's forecast
Mostly sunny High of 77 degrees (25 C).
Friday's weather
Showers. High of 68 degrees (20 C).
Friday's results
Men's semifinals: No. 2 Rafael Nadal beat No. 24 Matteo Berrettini 7-6 (6), 6-4, 6-1; No. 5 Daniil Medvedev beat Grigor Dimitrov 7-6 (5), 6-4, 6-3.
Stat of the day
27, 1 — Number of Grand Slam finals, including the 2019 U.S. Open, reached by Rafael Nadal and Daniil Medvedev.
Quote of the day
"Deep inside of me, I understand that what I've done these four weeks is amazing." — Daniil Medvedev, who has gone 20-2 and reached four finals at his past four hard-court tournaments.