Head Size
The target is 95 square inches, the MP is 96-100, and the OS is above. i.e. Mid, Mid-plus, Over-size.
Generally speaking, novices and ladies with weak strength are recommended to use the OS paddle surface, which has a large hitting area and a large dessert, which is easy to catch the ball, and because of the large paddle surface, the power is dispersed after the ball touches the net, and the effect of unloading is obvious, and it is convenient to use force to play. Due to the small dessert of the MID paddle, the requirements for technique and strength are high when hitting the ball, but the more concentrated power when hitting the ball can facilitate the strong player to hit a violent heavy blow! Therefore, most of the rackets on the MID paddle are heavyweight rackets, which are specially equipped for violent players. The MP racket can be said to be the most mainstream racket today, which can be used from experts to newcomers, and can be selected according to their own characteristics.
Length
Length: Standard Length 27 inches / 69 cm
In adult rackets, there is no short, only the extended type, in order to only lengthen the arm, the increase in the demand for power can bring more power to the serve and hit. For this question, please refer to the basic mechanics knowledge of secondary school. Zhang was one of the first to experiment with longer rackets, which led him to increase his serve speed to 120 mph. The most famous in the lengthened shot is POG lengthening, that is, Zhang Depei's generation, and PD+ endorsed by Roddick, but novices do not recommend using PD+, and it is easy to get tennis elbow if the action is uncoordinated, but Zhang Yi lengthening can be recommended, which is extremely friendly to the arm, that is, the strength has sunk a little, and he has done what he can.
Strung Weight
How much power, with multiple beats, you will know if you can beat it when you swing on the court. Except for O3, the weight of other beats can be used as a parameter for swing weight.
A reminder to men who want to play violent balls: the master has a strong ability to coordinate and exert force, and he can also play violent balls with a light tap, but ordinary people do not use enough force, and if they want to play violent balls, it is better to use the momentum theorem, that is: the racket hits the ball hard, and the opponent will then work harder. That's why people like Roddick, who don't paint on the racket, add a lot of lead to the racket.