Carlos Alcaraz saved two match points to defeat Taylor Fritz 6-7 (10/12), 7-5, 6-3 on Friday, advancing to the Paris Masters semifinals for the first time.
The 23-year-old Spaniard fought back from a set down and erased multiple match points with sharp passing shots before completing a decisive third-set break.
Alcaraz will face former world number two Casper Ruud on Saturday after the Norwegian defeated Nuno Borges in straight sets.