Serena Williams holds all four major tennis titles after her Wimbledon victory Saturday but she wants more.

A victory in New York in September would allow Williams to tie Steffi Graf's mark for 22 career Grand Slam titles, and give her a calendar Slam, matching the one Graf garnered in 1988, the last time it happened. A self-styled "Serena Slam," achieved with the 6-4, 6-4 defeat of Garbine Muguruza on Centre Court, isn't enough for the 33-year-old.

"I played Steffi a couple of times, and it was really one of the highlights of my career," Williams told a small group of reporters a few hours after her victory. Winning all four majors in one calendar year was "definitely a goal of mine when I was younger. Since then, it's become more of a distant dream, a fable, because I've never been this close. We'll see."