With all the viciousness in American politics right now, it’s a pleasure to take a break from it to focus on the Olympics, which begins Friday, and consider the searing questions of the moment, like why has swimmer Ryan Lochte dyed his hair ice-blue? So he’ll look like a merman? Except it makes him look old and flies in the face of his pronouncement that he’s matured. (Do mature people dye their hair blue?) Ryan, Ryan: We still love you.

Lochte and his great rival, Michael Phelps, will be taking one more plunge into the Olympics. Novak Djokovic – who just won his fourth Rogers Cup and 30th Masters title – will be there as well, having bounced back from his Wimbledon upset by Sam Querrey. Andy Murray – who’s shaping up to be his big rival once again, having taken Wimbledon – will also be there, while Rafael Nadal and his tender wrist are questionable.

One big name who won’t be there is Roger Federer, who’s taking the rest of the year off to heal various injuries. ...