When you watch modern players, it looks like they whip their racquets across the ball and their bodies, rather than at the ball and through the court. It’s an illusion—they swing with so much force that you don’t notice how much they extend their racquets toward their targets.
For club players, swinging across the ball, rather than through it, is a recipe for disaster. You’ll hit less effective shots and be more prone to injuries, particularly to the shoulder and elbow. I’ve never seen a player stay with the ball as long as Andres Gimeno. He had the longest strokes of any player and hit every shot very deep, near the baseline. No matter how hard you hit the ball, if you consistently hit it deep, very few opponents will be able to hurt you.