Rafael Nadal has learned his lesson against Diego Schwartzman in Rome and he is now much better prepared, says coach Carlos Moya.
Nadal suffered a shock straight sets defat to Schwartzman in the quarterfinals of the Italian Open last month, although it was his first tennis since February.
The pair will meet again in the semi-finals of the French Open on Friday, and Moya says Nadal is determined not to allow a Rome repeat.
"The match in Rome was very strange because Rafa won two very good matches against powerful opponents," Moya told Eurosport.
"Against Schwartzman it was the first time that he had problems in the score and he did not manage it totally well on a physical or mental level.
"We learned from that moment and now he is at a great level with many more games played.
"It will be a tough mental battle and I think we have some weapons that will allow Rafa to compete with guarantees."
Despite the greater confidence, though, Moya does concede he is expecting a very tough match again against Schwarzman.
"It will be a very difficult duel as we saw in Rome," he explained.
"Diego's match against Thiem yesterday was incredible and I think even Diego could have won more easily.
"The players have two days off to recover, but I always say that a Grand Slam is like a marathon.
"The less hours you are competing the better to face the final sprint.
"Even so, Diego is an incredible player and we don't think that the physical factor is going to influence too much."
Rafael Nadal is chasing a 13th French Open title in Paris this year which would draw him level with Roger Federer's all-time Grand Slam record of 20.
For more exclusive content from Tennisbuzz, including news, features, trivia, promotions and more, please be sure to sign up for our newsletter below or via our home page.
Why not test your tennis knowledge by tackling on of our fiendish quizzes too?