Serena Williams Beats Sister Venus at Australian Open to Win 23rd Grand Slam Title

This is also Serena's 7th Australian Open title --- tying Margaret Court for the most by any player in the Open Era

Serena is one title behind Court, who has 24 overall Grand Slam titles in the Open and amateur eras.

Following Serena's win, Nike released the following ad which aired in the U.S.:

Tennis legend Billie Jean King tweeted congratulatory remarks to Serena, writing, "Congrats @serenawilliams on your 23rd major title and return to the top of the @WTA rankings. You are a history maker and a trailblazer."

King also directed a tweet to Venus, writing, "To @Venuseswilliams: Thanks for showing us it's never too late. What an amazing run and what an amazing life. #championforever."