| In this study,the tactical characteristics of Djokovic and Sisypas during the stalemate phase based on association rules are used as the research object in this article.The literature data method,video observation method,mathematical statistics method,and logic analysis method are used for research.,Draw the following conclusions: 1 In the stalemate stage,when Djokovic occupies the initiative,he will increase the possibility of scoring by alternately attacking the opponent’s backfield forehand and backhand.The combination of strategies is slash attack,surprise attack Straight lines,forehands,and slashes repeatedly hit the attack,but the opponent’s score caused by unforced errors accounted for about 30% of the opponent’s total score,which is relatively high.Tennis players should work hard to reduce their unforced mistakes,which will greatly reduce their situation and increase their probability of winning.2 In the stalemate phase,when Sisypas takes the initiative,he will increase the possibility of scoring by alternately attacking the opponent’s backfield forehand and backhand position.His forehand offensive ability is strong,and the forehand slash will attack the opponent’s opponent.There were more errors in the straight attack,but there were more unforced errors when returning the ball in the midfield.3 Djokovic and Sisypas show the distribution characteristics of the hitting area in the slamming stage to suppress the backcourt,control the left and right lanes,and back to front;the scoring efficiency shows the right area,Features of high frontcourt scoring.In the stalemate stage,the distribution of return points is characterized by the left and right zones,and the back field points are the main areas;the distribution of scoring efficiency is characterized by the left and right zones,the front and back field points.4Strategies for improving the tactical level in the stalemate stage of tennis are:(1)strengthen the mastery of conventional strategies and be able to deal with the opponent’s conventional strategies;(2)combine their own characteristics to form a tactical system that meets their characteristics;(3)strengthen training,To reduce unforced errors;(4)to strengthen the control of training in the stalemate area and the ball drop point to ensure the quality of the ball. |
