Jessica Pegula dropped the opening set against Karolina Muchova 6-1 in just 28 minutes.

Pegula’s troubles bled into the start of the second set, where she quickly found herself on the verge of trailing 3-0.

Despite a tentative start, the No. 6 seed was able to excel by changing her gameplan.

Instead of playing at Muchova’s pace, Pegula took on an aggressive approach.

As the match progressed, the 30-year-old, who had struggled in the first set during the most physical exchanges, began to embrace them, standing toe-to-toe with the Czech in the biggest moments.

In the third set, Pegula was truly dominant, winning 17 of 24 points on first serve, saving three crucial break-point opportunities late that would have likely allowed Muchova back into the match.

On Saturday, the American will play in the biggest match of her life, aiming to win her first career Grand Slam title.