This study investigates how sport enjoyment and the immediate impact of social interactions with peers and coaches influence short-term sport participation among early adolescent female handball players. By using a diary study approach, data from 27 players over 10 practices in 4 weeks (270 measurement points) were collected. The findings revealed that coach controlling use of rewards during practice increased the risk of non-attendance at the subsequent practices, while peer relatedness support after practice increased attendance probability. Contrarily, peer intra-team conflict, coach negative conditional regard, and sport enjoyment did not predict attendance, suggesting that peer relatedness support and coach controlling use of rewards are more influential in short-term participation decisions for this group of players. Sport enjoyment during practice, as well as peer relatedness support during and after practice, predicted sport enjoyment the following practice. These results highlight the importance of feedback timing and interaction quality in youth sports. Further exploration is proposed on these dynamics across a wider range of demographics, and longer time periods to understand the impact of short- and long-term sport participation. © 2025 The Authors