I was talking to my mom one time, like, "Gosh, I'm 30." And she's like, "In your thirties you're even stronger than in your twenties." I didn't believe her, but I have played better in my thirties.
Serena WilliamsI'm definitely not at my best. Honestly, I'm under 50 percent. But I've won stuff under 50 percent before.
Serena Williams