Madison Keys dominated CoCo Vandeweghe 6-1, 6-2 to reach her first Grand Slam final.
The No. 15 seed will face unseeded Sloane Stephens on Saturday in the first U.S. Open final between American players since Serena Williams beat Venus Williams in 2002.
Keys had no problem with the No. 20 seed Vandeweghe or with an upper right leg injury that caused her to call the trainer to be taped midway through the second set.