John McEnroe is one of the most accomplished tennis players of all time, but he lives just as vividly in the public imagination for his volcanic interactions with line judges and umpires. It’s no surprise, then, that McEnroe wants line judges out of the game entirely (”they’ve already proven they can’t see anything”). To revive the sport from what he calls its current status as an elitist cult, tennis needs more than just the introduction of instant replay. And as McEnroe works to cultivate new talent with his tennis academy on Randall’s Island, he’s also focused on keeping his own six kids happy.