Off-court friendships can have both positive and negative effects on on-court performance. Positive effects include improved teamwork, increased trust, better communication, and enhanced chemistry among teammates. On the other hand, negative effects may include distractions, favoritism, conflicts, or cliques that could potentially harm team cohesion and performance. Ultimately, the impact of off-court friendships on on-court performance depends on the dynamics of the relationships and how they are managed within the team.