World number one Iga Swiatek shook off some early nerves to extend her winning streak to a staggering 33 as she beat American Jessica Pegula 6-3, 6-2 to book her spot in the French Open semifinals on Wednesday.
Swiatek, who turned 21 on Tuesday, is on the longest unbeaten run in the women's tour since Serena Williams bagged 34 victories in succession in 2013.
The Polish player, gunning for a second title in three years at Roland Garros, appeared a tad shaky in the initial games before marching past the 11th seed to set up a meeting with Russian Daria Kasatkina for a place in Saturday's final.
The 2020 champion is bidding to become the fourth player since 2000 to lift the Suzanne Lenglen Cup multiple times after Justine Henin, Serena Williams and Maria Sharapova.
"She was playing very low so to be good I had to be low on my legs. It was the key and I'm pretty happy I was playing with a good dynamic to push her back a little bit," said Swiatek on a sunbathed, yet windswept court Philippe Chatrier.
"Sometimes stress is a positive thing, it's going to make you more active and more tense so you can play a good performance. So I tried to use it that way."
Two days after dropping her first set of the tournament, Swiatek got off to a fast start, stealing Pegula's serve with a crosscourt forehand winner.
But unforced errors immediately crept up in her game and she was immediately broken back and showed early signs of nerves.
The Pole, however, went up a break again to lead 4-3 before holding and setting up set points in the ninth game. Pegula did her a favour by sending a routine forehand wide on the second.
Another of those gave Swiatek a break for 3-1 in the second set and she kept her grip, only squandering three match points before wrapping it up on Pegula's serve with a booming backhand winner down the line.