Cellphones ring in the stands quite often. But a player’s phone going off is rare. Alize Cornet was suitably embarrassed when her phone — inside her tennis bag — rang as Caroline Wozniacki prepared to serve at match point in Bastad, Sweden, in July. Wozniacki saw the funny side, breaking into a huge smile, before Cornet switched off the phone and threw her hands up in apology. Wozniacki was broken but still won in straight sets.