Tennis legends are coaching Wimbledon finalists Andy Murray and Milos Raonic

Thirty-three years ago, John McEnroe played Ivan Lendl in the Wimbledon men’s singles semifinals.

Sunday, they’ll meet in the finals.

Actually, it’s Scotland’s Andy Murray playing Canada’s Milos Raonic for the championship on Centre Court, but they are coached by tennis legends. Lendl is one of Murray’s coaches, and Raonic has been working with McEnroe.

The stoic Lendl rejoined Murray’s camp last month, two years after they went their separate ways. For Murray, it was a blast from the successful past, a time when he won an Olympic gold medal at London 2012, followed by wins at the U.S. Open and Wimbledon.

“I think it’s beneficial having him there,” Murray said of Lendl, an eight-time Grand Slam winner. “Because I trust him, have a lot of confidence in him. He can help when I’m on the court a little, just his presence. It might be a small amount, but every little bit helps.”

Likewise, Raonic began working with McEnroe last month, and the player-turned-commentator has encouraged him to be more demonstrative on the court, to let some of that energy out. No one needed to remind the colorful McEnroe of that when he was a player; his outbursts were downright comedic.

Paradoxically, Raonic said by letting his emotions out, he actually keeps his cool.

Explained Raonic: “He sort of implemented it in the sense of from how he’s seen me play. There’s no, ‘too calm for you. You tend to be too calm, try to get energy out of you, try to get it out of you on court and leave it all out there, try to get the most out of yourself.’”

McEnroe beat Lendl in those 1983 semifinals, and he went on to beat New Zealand’s Chris Lewis in the finals. But McEnroe’s protégé is the underdog this time. Raonic is playing in his first Grand Slam final, and is going against a local fan favorite who won here three years ago.

Raonic is the first non-European in the tournament’s men’s singles final since Andy Roddick in 2009. He’s bidding to become the first No. 6 seed to win Wimbledon since Michael Stich beat Boris Becker in 1991.

Second-ranked Murray is making his 11th appearance in a Grand Slam final, but this is the first time he has faced an opponent in one other than Roger Federer or Novak Djokovic.