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The most important thing in tennis training
If a coach tells you they know "the secret to tennis," be skeptical. There is no secret. Tennis is genuinely hard, it takes years to develop, and anyone promising a shortcut is selling something.
But if we're talking about the single most important technical concept in the game — the one thing that separates recreational players from elite ones at a biomechanical level — there is an answer. And it's something most players never consciously understand, even after years of playing.
It's called the 70/30 rule.
Get More Spin
Every tennis player wants more topspin. More spin means more margin over the net, more dip into the court, more consistency under pressure, and — when executed correctly — more pace. The players with the heaviest topspin on tour don't just hit harder. They swing differently.
Spacing
Look closely at slow-motion footage of the best forehands in tennis history. Roger Federer. Rafael Nadal. Novak Djokovic. Despite their different grips, stances, and swing styles, they all share one defining characteristic at the moment of contact: significant distance between their elbow and their body.
This isn't coincidence. It's physics.