"Grinders can pound the ball or push in my book. It is their unwillingness to move forward and attempt to pressure opponent that defines the style for me."
Thanks for the insight. This is why I asked for the definition of "grinder" because what you describe is not how I define a successful grinder. It's that consistent, mentally strong player with great defensive skills who may be a counter puncher "but" punishes you for making mistakes (Nadal, for example, will put away the soft mid court shot he may get in response to a heavy cross court forehand) but he may take 5-10+ shots as he "constructs" the point.
Tennis is very similar to chess. Some very physically gifted players can play "quick strike tennis" like Isner or Sernea but most can't and shouldn't try. Instead, they should construct points then end it with the dagger but you don't throw out the dagger until you setup your opponent which takes consistency, patience and mental strength.
But for Serena's dominance, a few female grinders (under my definition) would have already won majors. That's not a stab at grinders but more about the dominance of Serena who is, in my opinion, the best of All-Time so it's not fair to say grinders can win majors, that is, grinders as to how I'm defining it which is very different than a classic "pusher." However, by the way, I have massive respect for pushers. Instead of complaining about pushers, learn how to beat them. There's a reason they are successful in the juniors and recreational level . . . at the pro level, again, someone like Errani doesn't hit a slew of winners and came within 1 match of a major . . . but she is crafty as hell and incredibly strong mentally.
It's just like fast food in this country (U.S.) . . . we want instant satisfaction but we don't want to work and earn it . . . it takes work to properly construct a point . . .
the real problem/issue is 99% of the coaches don't know how to do it either . . . it's only that 1% of the coaching ranks that are truly special and understand how to develop a player and more importantly how to teach . . . this is the real issue underneath everything . . . do the private coaches/club coaches/usta coaches truly know how to develop players?
here's a poll question . . . ask the local pro or club pro how many juniors did they coach from the formative years through their teens and then went on to the pro ranks? It's a pretty short list at least from my experience. I know I want a coach for my daughter that has been in the trenches at a high pro level who understands tennis at a global level and has played against all styles and types of players and truly understands what it takes to be successful at the pro level (not just what it takes to play Div. I at a mid major; nothing wrong with that but if we are talking about majors at the professional level, then everyone gets called out . . .).
I've learned pretty quickly that many parents spend a slew of $ with coaches that are average themselves (at best).