Casper Ruud has been called a clay court specialist for the majority of his career but the Norwegian is not too fond of that description.
Ruud has proved several times that he's pretty good on surfaces not named clay. The Norwegian plays his best tennis on clay and it's the surface on which he reached his maiden grand slam final but he also likes to play on other courts. He played in the Miami Masters final this year and now the Montreal Masters semi-final as well.
For him it's just tennis:
"The media is making names and calling you clay-court player too early sometimes. At the end of the day it's just tennis, lines are the same, measurements are the same. Nadal has won 2 Wim, 4 USO and 2 AO. I prefer clay, yes, but I also like hard courts."
Ruud makes a fair point as most big-name tennis players play pretty good tennis on all surfaces. It's obvious that he'd like to be known as a complete tennis player as opposed to just a player that is good on clay courts.