Nadal retired in the fifth set of his quarter-final match against Marin Cilic because of a leg injury.
Later scans have since shown that the world number one has suffered a thigh tear and will be ruled out for up to three weeks.
However, at 31 years old he has been given a warning by his doctor to be careful of over-working his body.
Cotorro believes that his client must now pick and choose the competitions which he plays to ensure the injury does not recur in another Grand Slam.
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With the bill that the sport is passing to Rafa, it is about regulating the competition.
"Obviously the competition is very demanding, as the years pass you have to take certain measures,” Cotorro told Spanish newspaper El Confidencial.
“The physical condition that Rafa had with 20 years is different from the one he has with 32, after a life dedicated to high competition.
"This is logical in professional sports, as happens to Nadal happens to other players.
“It is true that the circuit is very demanding and now, with the bill that the sport is passing to Rafa, it is about regulating the competition.”
The comment echoes Nadal’s own personal complaints of playing too match matches throughout a season.
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Following his retirement against Cilic, Nadal said: “Somebody who is running the tour should think a little bit about what’s going on.
“Too many people are getting injured.
“I don’t know if they have to think a little bit about the health of the players. Not for now that we are playing, but there is life after tennis.
“I don’t know if we keep playing on these very, very hard surfaces what’s going to happen in the future with our lives.”
