Data were collected in a retrospective fashion and were transcribed into electronic format for HS and collegiate athletes and combined with the professional data for analysis. Demographic information, details of current sport commitment, and future athletic plans were collected. Questions asked required answers such as yes/no, age, or number of months. Athletes were asked if they specialized to focus on only 1 sport, and if so, data were then collected pertaining to when, how, and why this decision was made. Continuous data were analyzed using 1-way analysis of variance (P < .05), and continuous variables between groups were compared using Kruskal-Wallis and Mann-Whitney tests. Categorical variables (all yes/no questions) were compared using chi-square analysis (P < .05).