| With the exception of the 2020 Australian Open,all four Grand Slam tournaments could not be played or cancelled due to the impact of the global coronavirus pandemic.Many top players were unable to compete due to the epidemic,so this paper adopted the last two Grand Slam hard court events before the 2019 US Open and 2020 Australian Open.Wang Qiang has been the leading figure in Chinese women’s tennis since The era of Li Na.She won gold MEDALS in women’s singles at the National Games in 2017 and 2021 and the Asian Games in 2014 and 2018.However,she has seldom achieved success in Grand Slam tournaments.Research wang qiang in grand slam events serve phase technique application situation,and stage of the world’s top women’s singles tennis player serve technology and tactics,comparing the using situation in order to pass data analysis found that wang qiang in the game stage problems in technology and tactics,and for the other players in China to participate in the grand slam of the reference and reference.This paper uses literature method,video observation method,technical and tactical statistics method,mathematical statistics method,comparative analysis method,expert interview method and other research methods,selected Wang Qiang in 2019 US Open from the first round to the quarterfinals and the Australian Open from the first round to the fourth round of a total of nine matches using service skills and tactics as the research object;As video research and technical and tactical statistical analysis data,this paper makes a vertical comparison of Wang Qiang’s technical and tactical performance in the serving stage of the two seasons,and makes a horizontal comparison of the gap between Wang Qiang and the world’s top athletes in the serving stage.Through the statistics of the semifinals and final,the evaluation index system of the skills and tactics of the top players in the world women’s open singles in the serving stage is constructed,and the horizontal comparison with Wang Qiang is made.The main research conclusions are as follows:1.Comparison of the winners and losers of Wang Qiang and Wang Qiang(1)Technology: there is no significant difference in the speed of first serve and the success rate from the point of view of the match,but there are significant differences in ACE rate,scoring rate,second serve scoring rate and second serve scoring rate.(2)Tactics: First round: From the perspective of winning field,the success rate and scoring rate of the three lines in District 1 show significant differences.The utilization rate of inner corner and outer corner and the success rate of outer corner were significantly different,and the scoring rate of the three lines was significantly different.Second wave: from the point of view of winning and losing field,the utilization rate of outer corner in the first area is significantly different,the utilization rate of inner corner and middle road,the success rate of outer corner and middle road,and the scoring rate of middle road are very significant differences.The utilization rate of the middle route and the success rate of the three routes in the two districts were significantly different.The utilization rate of inside corner,outside corner and scoring rate of middle way are very significant difference.(3)Techniques and tactics: Zone 1: the landing points of the third racket after the outside corner serve are in zone 1 and 4 and zone 3 and 6,while the landing points of the third racket after the middle serve are in zone 1 and 4 and zone 3 and zone 6,showing significant differences.Zone 2: the landing points of the third pat after the outside corner serve are in zone 3 and 6;the landing points of the third pat after the inside corner serve are in zone1 and 4;the landing points of the third pat after the middle serve are in zone 3 and 6.2.Comparison between Wang Qiang and world top athletes(1)Technique: ACE rate,service speed,scoring rate and service stability in the match are still far behind the world’s top level.(2)Tactics: Wang Qiang has reached the level of the world’s top athletes in terms of the success rate of serving line.(3)Techniques and tactics: the distribution of landing points on the third beat was not rich enough,and more of them chose the middle route,failing to achieve the tactical effect.Evaluation criteria: Compared with the scoring standards of the world’s top athletes,6 of the 7 technical indicators of Wang Qiang in the serving stage are average.From the number of wins and losses in the 2019 US Open and 2020 Australian Open,it can be seen that wang Qiang’s various statistics are up and down obviously,which are greatly influenced by her opponents. |