Rafael Nadal's French Open haul is the only record in sport that will never be broken, according to Richard Krajicek.
And the former Wimbledon champion believes Nadal could yet add a 15th Roland Garros title in what is set to be his final year on the circuit.
Indeed, Krajicek believes Nadal's great rival Novak Djokovic would even be hoping to see the Spaniard succeed again in Paris.
While Djokovic's 24 singles grand slam triumphs edge out Nadal's 22, his performances at the clay-court major are unmatched.
Nadal has 14 French Open titles, losing only three times in 115 matches at the event.
Although he did not compete last year, as Djokovic earned his third Roland Garros championship, a winning return in 2024 would provide a fitting conclusion to a legendary career.
"It would be great for Nadal to go for the clay and win one more French Open," Krajicek told Stats Perform.
"I think every record in sports or in tennis can and will probably be broken. I'm pretty sure the only one that will never be broken is the 14 French Open titles from Rafael Nadal. I don't see how somebody can win 14 titles."
Of the possibility of one last win for Nadal, Krajicek added: "It would be just incredible.
"I think everybody in tennis, probably including his competition, Djokovic or [Carlos] Alcaraz, would love for Rafa to win one more French Open."
That is a realistic aim, according to Krajicek, although he does not see Nadal competing for the top prize at either Wimbledon or the US Open.
"For me, [the French Open] is the only one. If he wins any grand slam, it's that one," the 1996 All England Club winner said. "I don't think he'll ever win Wimbledon again, also not the US Open.
"I don't know how good his body is, but the feeling and how much he played or how little he played... I think, for me, only the French Open. Roland Garros is the only one he can win."
Asked for his reflections on Nadal's legacy, Krajicek replied: "I think his legacy will be of a great champion, number two in grand slams, so one of the greatest ever, unbelievable.
"A great person, humble person, and probably the biggest fighter we've ever seen in any sports arena, in any sport. Just an incredibly mentally strong athlete."