| Europe is the birthplace of modern football.During its long development,European football has come to the forefront of the world.The UEFA Champions League is one of the highest standards in Europe.In the just-concluded UEFA Champions League,three teams that have never been in the championship finally go.To enter the semi-finals,the technical and tactical thinking embodied in the game is of great reference value and practical guiding significance.Football game defense is fundamental.Defensive advantages can often be invincible.It is difficult to achieve defensive goals by relying on personal defense alone.Only by combining local defensive tactics with personal defensive skills can defensive players achieve better results.This article uses literature data method,video observation method,expert interview method,questionnaire survey method,mathematical statistics method,comparative analysis method and case analysis method to analyze the local defensive tactics and personal defensive skills of the 2019-2020 UEFA Champions League quarter-finals in 23 games.Use the situation to conduct a comparative analysis.At the same time,three situational factors including the characteristics of conceding goals,different regions,different positions and different time periods were also added for analysis,and the following conclusions were drawn:(1)1.The average number of goals conceded by the top four teams and the bottom four were 0.975 and 2.05 respectively.The number of goals conceded by personal defensive skills was 28,accounting for 66.66% of the total.Among them,the number of goals conceded by blocking failure was the most.10 times;the number of goals lost due to partial defensive tactics is 6.(2)In the number of implementations of local defensive tactics of the top eight teams,the top four teams are more focused on flanking;the last four teams are more focused on assisting defense;the number of implementations of individual defensive skills of the top eight teams from high to low is as follows: Steals,tackles,heads-ups,blocks and tackles.Part of the defense in the top four is more active and aggressive.(3)Look at it from different regions.The top four teams have more attacks on offensive players in the front and back courts,and more flanking attacks in the midfield.In terms of personal defensive skills,the top four teams used more steals and possessions in the frontcourt and midfield to organize their offenses,but the success rate was not high.The top four teams competed more in the backcourt defense to destroy the offense.(4)From the perspective of different positions,there is no significant difference in the defensive technical and tactical indicators of the forwards of the top eight teams.The number of assisted defenses and steals of the defenders are higher than other positions.The first four teams avant-garde players have more rounds but a lower success rate.The number of defenders’ pincers and encirclements and the number of successes were significantly higher.The number of interceptions and the number of successes of defenders and defenders of the top four teams was significantly higher,but there was no significant difference in the success rate between the two.(5)From the perspective of different time periods,the defensive efficiency of the top eight teams at 0-15 min and 46-60 min is higher than other time periods.The number of pincers in 76-90 minutes and the number of interceptions in 0-15 minutes are higher than those in other periods.The defensive intensity is greater when the start is strong.(6)In the final game between FC Bayern and Paris,FC Bayern’s personal defensive skills appeared 198 times,with a success rate of 62.1%.There were 64 partial defensive tactics,and the success rate was 74.65%,the highest in a single game. |
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