For example, the Babolat Pure Drive has the following power potential values: Sweetspot Power = 41%; Periphery Power = 20.5%; Tip Power = 22%; Throat Power = 51%. In other words, this racquet returns 41 percent of the ball's impact speed (combined racquet and ball speed) in the center, 22 percent three inches out from the center, 21 percent at the tip, and 51 percent in the throat.
Pay no attention to the power level listed on the specs tab. It's meaningless. For example, the Boris Becker 11 Special Edition is listed as Low for the power level. But if you go to TWU and check the location rankings, the BB11 SE has the highest level of power at the center of the string bed (21" up) than any other racket they have ever tested.
300 grams (or 10.6 ounces) is an average weight for a racket. Less than 285 grams (10 ounces) is considered light. More than 310 grams (or 11 ounces) is considered heavy. Tennishead suggests…. As you’d expect, a heavy racket in general means more power but less manoeuvrability and vice versa with a light racket.
The inbuilt power of a racquet in the middle of the strings therefore depends only on the length and swingweight of the racquet, and on nothing else. Rebound power vs. Swingweight Figure 2: Calculated values of RP at a point 16 cm from the tip of the racquet, vs. swingweight, for the same racquets as those in Fig. 1.
Power ratings differ based on size of the head, stiffness of the racquet, weight of the racquet & tightness of the strings. Prince uses the 600 to 1600 system to compare within the Prince family. A 1000 Prince rating is equivalent to about 2,300 -2,400 USRSA. You can use the site to compare any Prince racquet to any Babolat.
With a racquet weighing around 11.5 ounces, a balance within 6 points (preferably fewer) of even, and a stiffness of 70-75, most advanced players can swing just as freely as ever, and the racquet's somewhat greater power is offset by the more consistent angle at which it sends the ball on its way.
Generally, tennis racquets that are head heavy will provide players with more power. Maneuverability comes from the fact that these racquets tend to be lightweight. As a player swings a head heavy racquet and makes contact with a tennis ball, the extra weight helps provide a greater force on contact.
The range or scale for stiffness for racquets will usually fall between 50 and 85, where the lower number indicates a more flexible racquet, and the higher number a stiffer racquet. However, the majority of modern racquets will usually fall somewhere between 60 and 75.