Introduction: Sufficient sleep is integral to overall health whereas suboptimal sleep puts athletes at greater risk for injury, lengthens their recovery time, and decreases their performance. Our purpose was to compare sleep across training days (i.e., competition, practice, and rest) in adolescent athletes, specifically identifying differences between nights before and after training. Methods: Participants [ n = 33 (14 male, 19 female), aged 15.6 ± 1.0 years] wore an activPAL accelerometer cont