The Comparative Analysis Of Technique And Tactics Of Federer In The Race Of The Different Times

Federer entered 22 times and gained 11 champions in 2003 to 2010 the finals in the period of Grand Slam. He was in ATP the top of the throne in 2004-2007 four consecutive years. In 2008, because of injuries & age, his authority has become loose, but he was full of technique and tactics and represented the most advanced concept of tennis. Currently, to his study mainly concentrated in horizontal, to his research are less in vertical. This article will be researching in horizontal & vertical.This article mainly observed by video of statistics law, mathematical statistics, comparative analysis of research methods on the comparative analysis of technique and tactics of Federer in different times of the race, draw the following conclusions:(1) From 2004 to this, Federer has gone through three stages:Peak period,Recession period,Rebound period.(2) From the overall, his different periods of relative stability of the techniques and tactics, but he had different degree of volatility. this is largely due to he grew older, his physical ability fell, made him against the ability to decline in the game, and against his opponent's strength was more and more powerful.(3) Technological and tactical of the characteristic of the Peak: The stability of the inside and outside corner is smooth, but in the middle of the second serve, the clay court, the hard court to the middle of the usage above the grass court; Use different technologies are relatively stable. The usage of the clay and hard court are the same in the value, but it leads have no laws can follow; The value between the forehand and backhand old is the largest in the clay court.(4) Relative recession period the characteristic by the technological and tactical:Relative recession period the characteristic by the technological and tactical:The stability of the inside and outside corner is higher, and the second serve of the middle area is the lowest; The different usage of the technologies are smooth, the value between the win and the lose point in the clay court are bigger than the hard,the grass court; Hitting the ball of the horizontal and vertical space is stability, and The value between the forehand and backhand is the larger in the clay court.(5) Technological and tactical of the characteristic of touch the bottom of a period:The stability of the inside and outside corner is smooth, and on the second serve, the value between the hard court and the grass became smaller; Use different technologies is relatively stablility; Hitting the ball of the horizontal and vertical space is stability, and the value between the forehand and backhand became smaller.