"djovovic has one style, play like a brick wall and always hit the ball back, 30+ shot rallys until you do an unforced error, he will always return the ball like youre hitting it against a brick wall, nothing fancy
the most boring version of tennis i ever witnessed"
this is completely right, any good tennis player that isnt braindead knows that
in tennis our coach even said : play djoko style, play agressive etc
and djoko style was regularity, always giving back ball very long on the court, and play long exchanges while waiting for the mistakes