Emma Raducanu Jannik Sinner Stefanos Tsitsipas Career Changes Alexander Zverev Mentorship Partnerships Performance Improvement German Tennis Federation Controversies Performance Pressure Emotional Management Olivier Rodriguez Coaching Styles Marco Panichi Carlos Alcaraz Mental Resilience Daniil Medvedev Florian Reynet Toni Nadal Career Transition Emotional Support Naomi Osaka Team Dynamics Performance Evaluation Performance Issues Trainer Relationships Performance Challenges Coach-Athlete Relationship Coco Gauff Darren Cahill Performance Strategies Boris Becker Career Decisions Collaboration Emotional Resilience Mental Health Roger Federer Career Transitions Andy Murray Djokovic and Murray Novak Djokovic