Tennis players and coaches have one of sports’ most complex relationships. Some go alone

INDIAN WELLS, Calif. — In the middle of a chastening 6-1, 6-1 defeat to Amanda Anisimova in the California desert, Emma Raducanu walked over to her coaching box in search of guidance. Raducanu has declared a desire to play a more front-foot, aggressive style, the one that she used to win the 2021 U.S. Open as qualifier, but Anisimova overwhelmed her in a 52-minute demolition. “I have to, you know, look at what I achieved in the last nine days of practice when I arrived here,” Raducanu said of th