| Osaka Naomi won the U.S.Open Championship of four Grand Slam events in 2018,and won the Australian Grand Slam championship in 2019,ranking first in the WTA points ranking.Although Osaka Zhimei has made great achievements in the 2018-2019 season in the hard ground competition,its performance in the red soil competition is flat,and its personal performance in the hard ground competition is quite dark.In this paper,taking the technical and tactical characteristics of Osaka Naomi red soil and hard ground net as the research object,using the research methods of literature,video observation,comparative analysis and data statistics,the author studies the technical and tactical commonness and difference characteristics of 20 games in two different types of sites in Osaka Naomi 2018-2019 season,and draws the following research conclusions:1.The common characteristics of the service stage are: the service angles of the first and second serve are concentrated in the inner corner of the first zone and the outer corner of the second zone,and the scores of the second serve are also concentrated in these two spots,and the scores of the first serve are the inner corner of the same zone and the second zone.The third racket technology mainly uses the forehand and backhand stroke as the first choice of connection technology.The differences are as follows: the first round performance of hard ground is more lethal than that of clay,and the scoring rate of the first round is obviously higher.The backcourt depth suppression of the third round vertical landing is more intense,and the distribution of landing points is more.2.The common characteristics of the receiving and sending stage are: the receiving and the fourth racking techniques mainly adopt the forward and backhand strokes;the receiving and sending drop points are mainly concentrated in the horizontal left,middle and vertical middle and back court areas,while the fourth racking drop points are mainly concentrated in the left and right back court areas.The differences are as follows: in the success rate of the first set,clay is more stable than in the hard match,while in the second set,the pressure in the hard match is stronger,and the straight rate of the second set is higher than clay.The score of the fourth stroke is more obvious in clay match.3.The common characteristics of the stalemate stage are: the scoring firepower of the multi shot stalemate is mainly concentrated in the 5-6 shot competition,especially in the hard ground competition.The use of forehand and backhand stroke techniques is still absolutely dominant,and the use of other techniques is rare.The differences are as follows:in the hard ground competition,the main focus is on the initial stage of 5-6 shooting,while in the red soil competition,the more frequent fighting after 7-7 shooting,gradually undermining the opponent's advantages.In the hard ground game,the tactical intention of active line changing is stronger,and the rate of active line changing is higher.In the hard ground game,the application rate and scoring rate of forehand and backhand stroke are more outstanding,while in the red soil game,the application rate and scoring rate of forehand and backhand stroke are equal. |
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