- 学習院大学スポーツ・健康科学センター紀要 (ISSN:13447521)
- vol.11, pp.1-26, 2003-03-31
According as the rally tempo is accelerated remarkablely in recent tennis the service stroke that carrys out a preemptive oppotunity to attack takes on acqire importance more than ever. The tactics on a conbination of the service in tennis consisites of two factors controling the ball that are the speed (pace) and the course (placement or direction) in order to attack and make the open court (space). The present study was designed to investigate the actual conditions of a conbination on the service speed by the male professional tennis players and to throw some light on the tactical effect of a conbination of the service speed. The service speed indicated with the apparatus set up in a corner of the court was taken note. The service speed of the all points for 6 to 9 consecutive service games by six players in three singles matches was recorded. The numerical value of service speed indicated the initial speed. Those three matches were played at the first and second round in Australia Open taken place in 2001. The courts of these three games were the center court (Rod Laver Arena) and the first court (Vodafone Arena). The numbers 8 (ATP ranking is 23 rd.), 9. (ditto 2 nd.) and 28 (ditto 6 th.) seed players were included in these three matches. The investigations yielded the following results. a) There is a significant correlationsip between the first service speed and the height of the players. b) Winners' ratio for gaining point started from the first service ratio are higher than losers. c) The maximum or mean first service speed of winners was rapider than one of lossers. d) The number 28 (ATP ranking is 6 th.)seed player (G. Rusedoski : GBR) who had a rapid first service of prominence among the players participating in the championships did not make frequent use of high speed first services, and made freely use of slow speed first services. e) The player who competed with the number 28 seed player also had high speed first services, maximum and mean speed of his firstservice were respectively 214 (km/h) and 192. 7 (km/h), he made however few use of slow first service, so that his services showed no combination and monotony of first services f) The number 8 seed and 23 rd. ATP ranking player (P. Sampras) had the rapidest mean 2 nd. service speed of significance and the amplitude of speed was also largest. g) A decline in successful ratio of first service developed a tendency to lead the game of confusion, strain and loss. h) There was no common trend in the first service speed of all six players under any point situations. Three players that had the high speed service showed however respective peculiarities of significance under some point situations. From these results mentioned above, following tactical knowledges were noted. As the point percentage from the first service is ordinarily higher than from the 2 nd. service, it is important to raise the ratio of first service for average players in first service speed, and especialy for smaller players. And it is more effectual to use a change-up first service and to make a show of the combination with various service speeds in oder to keep the service game for the players who can hit even high speed first services over 200 (km/h).