- 學位論文
優秀青少年男子網球選手年齡與職業排名關係之研究
The Relationship between Age and Professional Ranking for Elite Junior Tennis Player
摘要
最常被用來衡量職業網球選手的成功因素就是排名，也是決定贊助與否的一個重要依據。如何發現有潛力的網球選手並給予經費支援，就成為各國家網球協會需要探討的重要問題。本研究利用過去相關研究之ATP既有資料庫，從中擷取出生年在1983年到1990年，且青少年ITF排名達前10名的選手共134位，再依選手職業ATP排名成績分為A：1到100名、B：101到200名、C：201到500名、D：大於500名等4類，利用敘述統計探討此4類選手在16歲至27歲的ATP職業排名軌跡。結果發現A類選手自20歲起，排名變異明顯小於其他類別，建議贊助商可以使用選手在18歲時的職業排名為贊助依據，若排名高於907名，最後能成為A類選手的機率是38%。
並列摘要
Ranking is the most common measure to evaluate the successfulness of a professional player and a basis to support or not for a sponsor. How to fund a potential player becomes an important issue for all national associations. The study adopts the database developed by previous studies and retrieved players who born from 1983 to 1990 and has junior ITF rankings of Top 10. There are total of 134 players and classified them with their ATP rankings, A: 1~100, B: 101~200, C: 201~500 and D:>500. Using descriptive statistics to investigate their atp rankings at age 16 to age 27 for 4 different categories of players. The study find A type players have smaller variations in rankings at age of 20 and after. The study also make a suggestion to support players with pro ranking of 907 at age 18. They would become A type players with 38% chances.