| In modern football matches,the game is divided into three important moments: when the opponent controls the ball,when our side controls the ball and when the offense and defense are changed,the offense and defense are also changed.The defender can seize the ball right from the moment of attack to defense and take the opportunity to attack,which will bring great threat to the opponent.By using the methods of documentation and video observation,this paper studies the characteristics of the defensive behavior of the first ball holder and the first receiver and the way to regain the ball right in 13 matches of eight teams in the Champions League quarterfinals,semi-finals and finals in the 2017-2018 season.1.The use of grabbing the ball is more active and aggressive,and the effect of grabbing the ball is regional.From attack to defense,in the front midfield,midfield sideways and midfield midfield,the personal defensive behavior of the first ball-holder and the first receiver is mainly active in grabbing the ball.The effect of grabbing the ball in the midfield is good,while the effect of grabbing the ball in the front midfield and midfield sideways is poor,which is attributed to the lack of grasping the timing of grabbing the ball,the players holding the ball face the defenders and have controlled the ball well.There is a takeover team around,and the defender lacks a protection team behind him.2.There are differences in the purpose of blocking in different areas.From offense to defense,blocking is the main personal defensive action for the first ball holder and the first receiver in the front,back and midfield.In the middle of the back court,blocking shooting and threatening passing is the main way,and blocking effect is good,while in the front and back side,blocking passing route is the main way,but the effect is not good,because blocking is not timely,blocking distance is too far,and lack of observation of the receivers behind.3.Protection is the most frequently used group defensive behavior in each region,and the protection effect of midfield and backfield is good.From attack to defense,the first ball holder and the first receiver in each area take group defensive action to protect the main,with pinch as the supplement and fewest encirclement and grab.The protection effect is good in the mid-field and back-field areas,but not in the front-field areas,which is attributed to the too close protection distance and the lack of protection angle.4.The use of breaks in each area has initiative,and the players can accurately predict the route of passing and seize the opportunity of breaking the ball.From attack to defense,there are fewer breaks and higher success rates in the individual defensive actions taken by each area to the first ball holder and first receiver.When the defensive players break the ball,they should predict the route of passing and seize the opportunity of breaking the ball,and suddenly insert the ball from behind the receivers to form a break.5.Enclosure is the most effective and aggressive group defensive behavior.From attack to defense,encirclement is the least effective defensive action among the group defensive actions taken by each area to the first ball holder and the first ball receiver.Enclosure on the front side is due to the implementation of high defensive tactics,which has the advantage of number.Secondly,it is suitable for encirclement on the premise of narrow area of the front side and meeting the advantage of number of people.6.Cutting off the ball and one-to-one stealing are two main ways to regain ball rights.When attacking and defending,the way to regain the ball right is mainly to cut off the ball,supplemented by one-to-one stealing,while in the front,midfield,midfield,back and midfield,one-to-one stealing is the main way,and the interception of the ball is the supplementary way. |
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