I’ve been going to the Miami Open since it was the Lipton – held in the balmy confines of Key Biscayne – and yesterday I saw something I’d never seen at the tournament: a player smashing his racket during a practice session. It was Alexander Bublik, at the end of his hit with Gaël Monfils, and, heading to his chair, he tossed the mangled racket to fans in the stands.