Rafael Nadal reached his 14th French Open final on Friday after Alexander Zverev was forced to quit their semi-final after suffering a horror right ankle injury.
Zverev had to leave the court in a wheelchair after turning his ankle trailing 7-6 (10/8), 6-6 after more than three hours of play.
After screaming in anguish, a tearful Zverev was helped from the court by medics. Minutes later, the 25-year-old returned to the court on crutches and conceded the match.
"It's very tough and very sad for him. He was playing an unbelievable tournament and he's a very good colleague on the tour," said Nadal.
"I know how much he's fighting to win a Grand Slam. For the moment, he was very unlucky. I'm sure he'll win not one, but much more than one. I wish him all the best
Nadal, chasing a record-extending 22nd Grand Slam title, will play either Marin Cilic or Casper Ruud in Sunday's final.