I hope you were paying attention as Serena Williams won her 18th Grand Slam title against Caroline Wozniacki in Sunday’s U.S. Open Ladies Singles Final.

Why? Because with that win, Serena Williams became simply the greatest American tennis player ever. Male or female. No asterisks.

“I never dreamed that I could be compared to Chris Evert and Martina Navratilova,” Williams said in her post-match press conference. “I was just a kid with a dream and a racket living in Compton.”

Here’s how the numbers lay out. With her 18th major, Serena tied Chris Evert and Martina Navratilova. Evert, for all of her greatness and influence, isn’t quite a match for Serena. She did win her 18 majors in 56 majors for a .321 slam average, one fewer than Serena, whose Slam Average stands at .315. (Slam average can be computed by taking a player’s slam wins and dividing them by the total number of majors in which she competed)