Nadal In The Grand Slam Match Based On The Grey Correlation Method Research On Serving And Third Racket

Research purpose: Serve and use the third racket technique and tactics in the sports against the net,suitable for tennis.The purpose of this article is to study the technical and tactical characteristics of Nadal's serve and third racket in singles competitions under different types of venues,and to analyze the technical and tactical characteristics of the serve and third racket using gray correlation method.The importance of the techniques and tactics of the first three shots in the tennis game to the overall game is revealed,and the indicators that are related to the scores of gains and losses are used as theoretical references to provide a certain degree of theoretical basis for accurately grasping the development trend of tennis.Research methods: Using video statistics method and gray correlation method to compare the technical and tactical characteristics of Nadal's serve and third shot in the singles match of the 2019 four Grand Slam events.The statistics of the three beats were analyzed,and their technical and tactical characteristics were analyzed.The focus was on the serving of the serve and the application effect of the third beat.Research result:(1)The first-round success rate,the second-round scoring rate,the first-round scoring rate and the final scoring rate are compared,and the gray correlation is the highest.(2)In the hard court match,Nadal prefers the outer corner on the first serve,but the gray correlation on the inner corner is the highest;while the second serve strengthens the diversity of serve points,the gray correlation on the inner corner is the highest.The third shot is dominated by the forehand sideways,with the highest gray correlation.In the choice of the third stroke,the slash is the main choice,and the opponent hits the opposite side.Among the first three techniques and tactics combinations,"outer corner + diagonal" is the main one,with the highest gray correlation.(3)In the clay match,Nadal has the same usage rate of the inner corner and outer corner of the first shot,and the gray correlation of the outer corner is the highest;in the second round,the utilization rate of the outer corner is the highest,but the gray correlation of the inner corner is the highest.The third shot is mainly on the forehand sideways,with the highest correlation.In the choice of the third stroke,the slash is the main choice,and the opponent hits the opposite side.Among the first three shots of tactical and tactical combination,the "inner angle + diagonal" is the main,with the highest gray correlation.(4)In the grass game,Nadal had the same usage rate of the inner angle and outer angle of the landing point,but the gray angle of the inner angle was the highest;when the second shot,the use rate of the outer angle was the highest and the gray correlation was the highest.The third shot is dominated by the forehand sideways,with the highest gray correlation.In the choice of the third stroke,the slash is the main choice,and the opponent hits the opposite side.In the first three shots of tactical and tactical combination,"outer angle + backslash" and "inner angle + diagonal" are the main ones,with gray correlation.Analysis conclusion:(1)During the serve,the first and second serve are particularly important.In the choice of landing points,the use of inner and outer corners will have an important impact on the results.It is necessary to analyze the situation of the game and the situation of the opponent to strengthen the diversity of landing points.(2)In the selection of the third-strike hitting method,the aggressive attacking hitting method such as forehand sideways should be adopted to lay the foundation for the victory of the game.(3)On the line of the third shot,the ball should be hit back to the opponent's space,but it must be flexible.(4)In the technical combination,first of all,it should be customized with its own advantages;secondly,different technical combinations should be used in different venues;at the same time,it should be flexible and become more flexible according to the opponent's competition situation and competition trend The choice has reached the optimal result.