Back on the French Open court that undid her a year ago, Mirra Andreeva is growing up

PARIS — Mirra Andreeva knows that the tennis moments that can undo her are going to come. She might start missing. Her opponent might suddenly get hot. The crowd might start railing against her. How Andreeva — so talented, so young, and sometimes so not ready for the swirling intensity of a tennis match — manages those moments, will likely make the difference between fulfilling her potential and wondering about what could have been. “Sometimes it doesn’t work the best way, but I have the plan in