Serena Williams Handles John McEnroe's Sexist Insult Like The Boss She Is

Looks like Serena Williams knows how to return a nasty serve with grace off the court, too.

Tennis legend John McEnroe over the weekend called Williams the “best female player ever no question ,” but then said she’d be ranked “like, 700 ″ if she played in the men’s circuit. 

Williams, currently taking a break from the sport as she prepares for the arrival of her baby , wrote on Twitter on Monday: 

Williams, 35, has said she will return to tennis next year .