“…Tennis, swimming and diving, and fencing had the youngest mean ages of specialization (11.6, 12.4, and 12.8 years, respectively), while lacrosse, football, and field hockey had the oldest mean ages (17.2, 17.2, and 16.8 years). While not directly examining early sport specialization prior to the age of 12 years, a study of 343 NCAA Division-I athletes reported similar results, with 16.9% (58) of 343 athletes who reported specializing in their sport by their freshman year of high school 39 . The most common reasons cited for specializing were personal interest, potential scholarship opportunities, and skill level.…”