- US Open champion defeated in all-American semi-final in Cancún
- Aryna Sabalenka faces Iga Świątek with world ranking on the line
Jessica Pegula beat US Open champion Coco Gauff 6-2 6-1 to reach the title match at the WTA Finals in Cancún, Mexico, where she will next face either world number one Aryna Sabalenka or Iga Świątek.
In the first all-American semi-final at the WTA Finals since the reintroduction of the round-robin format in 2003, Pegula converted six of her 10 break point chances and lost serve just once during the 60-minute encounter.