Here is what Mouratoglou said about Federer
"It’s impossible for me not to say Roger [is the greatest of all time] because he plays the best that anyone has played tennis and he is still winning,"
"Since Roger took a few months off and came back to that level, I think players are less afraid to say when they are injured, ‘okay, I’ll stop for a few months, I’ll get ready and I’ll get healthy and it will be fine’.