Madison Keys was part of an all-American women’s semifinals last year at the United States Open. On Wednesday night, she became the only one of last year’s final four to book a return trip, beating Carla Suárez Navarro, 6-4, 6-3, in a quarterfinal.

Keys, 23, has been calm, composed and confident throughout her tournament, and acknowledged she had grown “better managing my emotions once it gets to this part.”

“Knowing that everything is going to be probably more amped up, and not shying away from those but just really being honest about it and talking about it,” she added. “Just, you know, embracing the moment. Just trying to remind myself to actually have fun and enjoy the experience.”

Novak Djokovic didn’t look to be having much fun during most of the following match, gutting out a 6-3, 6-4, 6-4 victory over 55th-ranked John Millman to provide the tournament a rare pre-midnight finish. Djokovic advanced to a semifinal on Friday against Kei Nishikori, the No. 21 seed.