本研究目的為以布萊恩兄弟為例，分析男子網球雙打比賽中不同的發球落點下，其網前球員所進行策略及策略後成效。研究方法以布萊恩兄弟為研究對象，從2005年到2010年一系列賽事比賽影片來分析，共13場比賽，分別以描述統計的方式呈現。本研究結果分下列幾點1.一發的落點比例是接近均等（T點34%、身體32%、外角34%）而每兩次發球就有一次進行搶打（42%），二發時發向身體的比例為總數的一半( 53% )2.一發網前球員策略在外角時仍有一定比例的搶打策略（28%），而假動作策略會增加，二發球發向外角時跳直線的使用比率又比第一發球更多（一發15%、二發34%）3.發球局發球直接得分和發球後一拍得分佔82%（一發）和79%（二發）。依據結果後分下列幾點結論:1.一發不會刻意提高某些落點比例來增加贏球率，而每兩次就有一次利用搶打掌握發球優勢，二發主要為擠壓接發球者身體。2.一發發向外角時，假動作策略會增加，但仍會利用搶打掌握發球後間接優勢，二發發向外角時利用跳直線策略攔截接發球者直線穿越球比一發發向外角時較多。3發球直接得分和發球後間接得分，都是發球局主要得分技術。

The purpose of this study will, based on Bryan brothers, analyze the effect of strategies taken by players before and after on the net under different serving placements in men’s tennis double during the tournament. The methodology has resorted to Bryan brothers as its subjects of research with a series of tournament videos of games from 2005 to 2010 for analysis, totaling 13 games. They are demonstrated in descriptive statistics respectively. The results of this study have concluded following findings: 1. the placement proportion of first serve is about equivalent (T point as 34%, body as 32%, and external angle 34%), while there will be an occasion of twiddle grip for every two serves (twiddle grip proportion as 42%), and the proportion serving to the body is half of the total (53%); 2. player strategy of first serve on the net is found with certain proportion of twiddle grip strategy at external angle (28%), while strategy of fake movement will increase; the utility proportion during second serve to the external angle jumping in straight line is found more than the first serve (first serve as 15%, and second serve 34%); 3. the game with serving right that scored directly and score with one shot has amounted to 82% (first serve) and 79% (second serve). Based on the results, subsequent conclusions are obtained as follows: 1. the first serve will not deliberately to enhance placement proportion to increase winning rate, while there will be an occasion of poching to master serve advantage in two serves, while the second serve is mainly to push-press the body of the server; 2. when the first serve is shot to the external angle, strategy of fake movement will increase and player will still make use of poching and master the indirect advantage after serving; when the serve is shot to the external angle it is found with relatively more occasions that player will make use of jumping direct-line strategy to intercept receiver responding with direct pass-through than that of serving to external angle; 3. both score directly from serving and indirect score after serving are considered as primary skills of score for serving game.

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