We are currently conducting a longitudinal study of wellbeing and performance at a West Midlands netball club over a season. This is a very large club with approximately 200 players ranging from Under 11's to seniors. The research study has two phases: Phase 1: Trials. Before the start of trials, we will administer a brief paper-based questionnaire to all players, which will include questions about how they feel about the upcoming trials, anxiety, self-efficacy, control and achievement goals. Phase 2: Longitudinal assessment of wellbeing and performance across the season. We will collect questionnaire data from players, parents and coaches at three time points across the season: pre-season (September), mid-season (December) and post-season (April). Players will be given paper-based questionnaires to complete at training. These will include questions about: wellbeing (this will contain measures of mental health, sleep, cognitive wellbeing, irrational beliefs and basic psychological needs), group membership and identification with the team, social support, injuries and any intentions to quit. At these time points we will also collect data from the club around performance, including number of quarters played per match.