To understand why Maria Sharapova is retiring from professional tennis at age 32, it helps to know what she can no longer endure. “I look at photos of myself and of the motion where I’m just about to hit the ball, and I’m in the air or just as I’m making contact,” she said, “and I can’t even look at it because it makes me cringe. I have so much pain.”
The pain has been a near-constant companion over the last two years for Sharapova, a former No 1 player who became one of the richest and most globally recognisable athletes