“Casper did great, he backed up the French Open, I am impressed and he’s looking awesome,” McEnroe told Eurosport. “He’s got a shot at winning this thing. I can’t believe I am saying this but Casper Ruud might be number one in the world in a couple of days.”

Ruud and Alcaraz are playing not only for their first Major title but also a straight shootout for world number one, as the victor will top the rankings on Monday.

“It’s awesome, he’s humble, he’s not going to light the stadium on fire with his charisma like an Alcaraz or Frances Tiafoe, but he’s a credit to our game,” McEnroe continued. “He’s extremely solid, he works hard, I think spending the last couple of years at the Nadal Academy, seeing how Rafa [Nadal] does things, helped him realise he had to do even more.”