| Summary: | 碩士 === 國立屏東科技大學 === 工業管理系所 === 103 === The study aims at ranking time analysis for tennis players when they were junior and turned pro. The data was extracted from the web of International Tennis Federation (ITF) using Excel VBA. Total of 121,714 players (male: 83,840 and female 37,874) and deleted players who born before 1930. Players are classified into 4 groups according to their ages. The relations between junior and pro rankings for each player are analyzed. The study found: 1: The headcounts for male players is more than female players. More players to play in recent years. 2. ITF top 10 ranking were achieved when they were 17.82 years old for males and 16.82 years old for females. Males with ATP top 10 rankings achieved when they were 25.18 years old and the average age for female players with WTA top 10 ranking is 23.57. Women tends to have better rankings when they are younger than male.3. ITF top 10 players have the highest percentage who can achieve pro rankings of top 100. Female % is higher than male’s. 4. Sponsors can pick players with pro rankings of 101~200 to finance them. Five players (2 males, 3 females) are selected in the study. After 1.5 years playing, they can all achieve Top 100. 5. Agents, tennis associations, equipment manufacturers and other sponsors can use the study as important references to funding.
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