Serena Williams's Technical And Tactical Use In Wimbledon And The US Open And The Difference In Effect Analysis

To understand the high level tennis player serena Williams in the grass and hard technique used in the situation and effect,the difference of the paper using the method of literature,video statistics,mathematical statistics and comparative analysis,to serena,2018,2019 at wimbledon and the us net quarter final,semi-finals and the final 12 games 26 sets of data from serving,receiving and statistical analysis of the three phase locked to the following conclusion,the rationality opinions are put forward based on this conclusion.1.Service period :(1)the inside Angle of the first serve and the fastest speed in the middle of the first serve are both higher than that of the us open,while the outside Angle is lower than that of the us open.There was a significant difference in the average speed of the second middle course,which was 9.118 KM/h higher than that of the us open.The fastest speed in the inside corner of the second shot is lower than that in the us open,while the fastest speed in the middle and outside corners is higher than that in the us open.(2)there is a very significant difference in the success rate of the first and second rounds: wimbledon >;The number of double faults at the us open was significantly higher than that at wimbledon.The number of straight serves and ACE in the two courts is much higher than the number of double faults,which indicates that serena has a good ability to serve and score.(3)there was no significant difference in the distribution and scoring rate of the third racquet return mode and the falling point;There was a significant difference in return routes,with wimbledon more likely to return the ball to the right.2.Return stage :(1)there is no significant difference in the way of sequential rounds;There was a significant difference in middle scoring rate: us open at >;In the middle of the scoring rate has a very significant difference: us open > wimbledon.(2)there is a very significant difference in the success rate of driving the ball in the second serve: the us open at > wimbledon;There was a significant difference in the scoring rate in the middle of the return serve: us open at > wimbledon.(3)there was no significant difference in the way the ball was returned in the fourth stroke.There is a significant difference between the two back-to-line.There is a significant difference in the scoring rate in the backcourt: us open > wimbledon.3.Stalemate stage:In the way of returning the ball,there is a very significant difference in the scoring rate of driving the ball: us open > wimbledon.There was no significant difference in the distribution rate of left,middle and right on return routes.There was a significant difference in the scoring rate between the center and the back of the court,both of which were us open at > wimbledon.4.The scoring rate of the first four racquets was significantly higher than that of the us open,and the overall percentage of points lost in the third to 10 th racquet was higher than that of the us open.