The 24-year-old Pole, who is ranked world No. 3 by the Women's Tennis Association (WTA), defeated the fifth-seeded American 6-1, 6-2 in their quarterfinal clash on Wednesday.
Świątek will face Ukrainian Elina Svitolina for a place in the championship match at the clay-court tournament in Rome.
Świątek is a three-time Italian Open champion. She triumphed in Rome in 2021, 2022 and 2024.
The 2026 Italian Open runs until May 17.
(gs)
Source: IAR, PAP