Yeah I'm pretty certain that Nadal will win the French Open once again this year. I'm expecting the odds to be low as he is in fine form on clay heading into the French Open. I'm just glad to see him fit for the Open as it looked like a couple of months ago that he might miss this years French Open.
He could very well win the French open but with all the other players coming back to play in better form since they all rested and didn't have to togh it out to get to a finals except for Alexander Zverev, they all have that on their side.
Sometimes it makes me wonder as to what year it was because you didn't expect that Rafa and Federer are playing high tennis up to this moment. . Back in January or February, everyone was writing off Rafa because of injuries, but again he proved them all wrong and now he is the big favorite again to win the French Open, and it is said the Rafa owns this tournament and its hard to see him losing it.
Maybe there will be players giving him a good match, specially in the top 10 but I don't see them having a chance to stop him specially at this point.
I really think that the players now days are a lot more professional then back in the day. This is why we are seeing players continue to hold their top form late into their 30's. As long as injuries don't hold them back but as we have seen with Nadal he has come back from several injuries which might of ended many players careers.
I'm looking forward to the French Open even though there are some players in top form, I still can't see Nadal getting beat unless injury strikes him down mid way through the tournament which I hope doesn't happen.
In addition, maybe nutrition and sports therapist also improved a lot in the last decade or so that's why top players who hire good coaches and nutritionist/therapist to help them cope with the demands of high tennis that's why those veterans are still in the league and still playing a level of tennis unheard.
Worst comes to worst, its Nadal himself who will prevent him from raising another trophy this year. I really can't think of anyone matching him in French unless we got a freak injury mid day as you have pictured it.