In a column for El Pais Rafael Nadal's uncle Toni commented on Novak Djokovic getting booed from the US Open crowd following his retirement against Stan Wawrinka. Toni wrote: "You have to understand the situation as the Serb was sad for having to leave the tournament and consequently the high chances he had to lift the trophy.
A part of the crowd behaved in a bad way." Toni also commented on the main topics of the tournament ahead of the semifinals: "Roger Federer played from less to good, which reached its highest stage in the match against the Belgian David Goffin.
He won 6-2 6-2 6-0 and in the following round he lost to Grigor Dimitrov in five sets. The Bulgarian had never beaten Roger out of seven meetings and also because he did not have a good year. Without any doubt, Grigor is a player with quality and very big technique.
I remember when I first saw him play the Rotterdam tournament. We thought he would be the next No. 1 and he was not consistent enough, but he is still brilliant. So I would not be surprised at all in seeing him play the final. In order to get there, he will have to go through Daniil Medvedev, the young player who had more chances at the beginning of the tournament to go far.
He is a very complete player despite until some time ago people were not speaking about him as he has an unusual game compared to the younger guys. Rafa managed to reach the final rounds without a big fatigue and I think he is the favorite to play the final.
Berrettini is world No. 24 and has a powerful serve and a fast forehand. We do not know how big can be the mental edge."