Roger Federer has discussed the different approaches between Rafael Nadal and Novak Djokovic ahead of the 2019 Laver Cup.
The Swiss maestro famously teamed up with long-time rival and friend Nadal in the 2017 inaugural Laver Cup.
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The next year Federer teamed up with Djokovic as Team Europe made it back-to-back wins.
Ahead of the 2019 Laver Cup, Federer has talked about the different approaches Nadal and Djokovic bring to training and the game.
"For me it was emotional to spend a week around Nadal and Djokovic,” the 20-time Grand Slam champ told Eurosport.
"You spend a week with Rafa and you look at his intensity. How can he find a balance? Because otherwise you get crazy.
“I was surprised by how he always looks for chances. He returns from behind and forward, with slice and top spin."
Federer said Djokovic took a “similar” approach to himself, aiming to be more relaxed.
He said he was also surprised with Djokovic’s “clarity” in his approach to how he wants to win a match.
This year’s Laver Cup between Team Europe and Team World will take place in Geneva.
Nadal and Federer are set to reunite again, which will no doubt excite the tennis world.