However, there is a general theory that soft rackets bring more power because of their greater deformation and better slingshot effect? Is that really the case? During hitting the ball, the ball usually stays on the bed for 3-5 milliseconds, which is a real "sonic boom", which is much shorter than the time required for the racket to recover after deformation. So in such a short time, the tennis ball has left the tennis bed before the deformed racket can transfer energy back to the ball. So whether it is hard or soft, the difference is just how much energy is lost. Control Generally speaking, a racket that can provide more power tends to reduce control (that is, the higher the power level, the worse the racket control).
But this is not absolute, it depends on the type and personal ability of the players. In fact, the hardness of tennis racket is not limited to the hardness of tennis racket, and the hardness of the racket frame of each tennis racket is completely different. Therefore, the manufacturer no longer provides the reference of racket hardness, because it has little influence, but more provides the comparison of the overall hitting hardness, and the racket face will be deformed at the moment of hitting the ball. Therefore, it doesn't make much sense to break the racket shaft by hand or look at the hardness of the racket shaft. What effect does the softness of the racket have on playing? Is it meaningful to break the racket by hand? In addition, some rackets will specially adjust the local hardness of the racket frame or the local hardness of the racket shaft, which will bring a completely different hitting feeling.
For example, YONEX's Sky Axe 88S and Sky Axe 88D use different frame hardness, which leads to a great difference in hand feel. For example, the elegant China high-precision putter grinds off the racket shaft near the racket frame with a milling cutter to increase the curvature of the racket shaft. So when choosing a racket, you can't rely on methods such as breaking the racket.