No. 1 Caroline Wozniacki says she’s relishing a Saturday night semifinal against 13-time Grand Slam champion Serena Williams.

"I enjoy playing out there," Wozniacki said. "I enjoy playing the night match. I enjoy the atmosphere. I feel I always play best when there's something big, when something big is going on. This is what you practice for. This is what you want. You don't want to play on practice Court 15 or, out on the small courts.  You want to [on Ashe Stadium].  You want to play in front of a full crowd. I'm excited about that."