Breakthrough Tennis emphasizes the important role athletes can have in their own skill development. The book focuses on the broad principles involved in tennis, in fact in most sports: concentration, timing and balance.

"These fundamentals cannot be explained to you. You need to be aware of them yourself. You need to feel your physical game and observe your mental game."
    —Breakthrough Tennis

"Rolf Clark's approach to tennis allows people freedom from having to play the 'right way' or trying to find 'the answer' that will finally fix their game. His concept of inquiry leaves people powerful in their own development."
    —Jonathan Clark, President, Tennis Professional Foundation
        (and no relation to the author)