On World Tennis Day, watch eight of the world’s biggest tennis stars—including Venus Williams, Andy Roddick (shown above), Juan Martin del Potro and Lleyton Hewitt—as they battle it out on the court at the 10th Annual BNP Paribas Showdown.
Tickets start at $35, 7 p.m., Madison Square Garden, 4 Pennsylvania Plaza, New York, NY,
worldtennisday.com/newyork