To prepare for the new star-studded Miami Invitational exhibition tournament, engineers built a tennis court on top of the Miami Marlins home field. Tennis is experiencing a resurgence, with almost 26 million people playing in the U.S. alone. That number has been on an upward trajectory five years in a row. While the sport’s renewed cultural relevance can be attributed to multiple factors, brands across fashion, entertainment, and even sports leagues like Major League Baseball are capitalizing on the trend through unconventional opportunities.