@Daniel ... W intentionally slowed down the surface because the fans were tired of watching people with an excellent first serve walk through matches. Just like the FO started doing things, faster balls for instance, to speed up the game because fans get tired of watching one grinding long rally after another.
In the old days before they had these super high tech rackets and strings they do today, it was more difficult to return first serves accurately and with any pace on a consistent basis, which allowed a serve and volley game to be a good strategy. Today's rackets allow players to essentially block the serve and still have control and enough pace that the server can't consistently serve and volley, as it's too high risk.
Just look at the big servers we have today. Zverev and Tsitsipas on a good day, Hurkacz, Sheldon, Raonic back ... as soon as they run into a player with an excellent ROS the rest of their game is exposed.
Tennis has evolved in part because of technology and in part because the sponsors want fans entertained to get more sponsors and ad revenue.
SH321il y a 6 heures
A lot of people could see Nadal's level had dropped off. The pundits had been saying for many years his style of play was hard on his body. As a result a lot of people were anticipating Nadal might retire, including me. Especially when he tied the then GOAT Federer and even more after he surpassed Federer's major total.
So I have to agree with Fred, how is this a story ... except that Federer said it.