By using the methods of video observation , mathematical statistics method and other methods of Cilic in the 2014 US Open Men's final service technical and tactical analysis and research , results showed:the key to Cilic to win is its strong serve and sharp attack , while his a round of success ratio , the net rate of scoring and winning points are better than rivals, and there are significant differences (P<0.01).%运用录像观察、数理统计等方法分析西里奇在2014年美网男单决赛发球阶段技战术，结果显示：西里奇的获胜关键是其强势发球和犀利进攻；一发成功率、网前得分率及制胜分均优于对手，且都存在显著性差异（P＜0.01）。
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