Rafael Nadal's impact on tennis has been "tremendous" but Marion Bartoli believes he already has a natural successor in Carlos Alcaraz.
The 22-time major champion confirmed he plans to retire next year following a decorated career that has seen him claim nearly every major honour in tennis.
His exit would leave just one of the sport's 'Big Three' left, in Novak Djokovic, following Roger Federer's retirement last year following the Laver Cup.
While Bartoli feels Nadal's legacy speaks for itself, she also suggests the rise of Alcaraz, who took his second grand slam at Wimbledon earlier this month, might mitigate his departure from the world stage.
"[His impact is] tremendous, but in some ways for him, because Alcaraz is Spanish, it almost feels like the torch has been passed," the 2013 Wimbledon champion told Stats Perform.
"[It is] the new generation that is starting to win, starting to be the best in the world. It might feel less like he's leaving tennis.
"Look at Roger. In Switzerland, there is nobody coming after [him]. In Spain, there is already somebody winning. Rafa will probably accept that, but it's never easy to walk away from something you have done for many years.
"That you have been so successful, that is part of your DNA, part of you, something that everybody recognises you for [in] being that amazing champion at Roland Garros."
Bartoli believes Nadal's decision has been made with an eye on the future, and acknowledges that the physical cost of his profession has to be considered.
"It's not easy to say that you're not going to play at Roland Garros again," she added. "That's just what you have to recover from. I think Rafa has been laying out his future really well.
"He's going into business, he's a father now. He has so many things to look forward to, but he has to preserve his body enough, so he doesn't have pains that stop him from living normally.
"As an athlete, when you walk away from your career, you don't want to have damaged your body so much that you can't even enjoy normal things in normal life.
"Rafa is at that point where he has to think whether it's worth giving it a final go or whether it's not worth it because it will damage his body long term."