Ronnie O’Sullivan, Right on Cue

On January 20, Ronnie O’Sullivan played a perfect match of snooker. It was in the semifinals of the World Grand Prix tournament, held in Leicester—a middling English city with a minor arena. Still, in front of the capacity 3,000 spectators and over half-a-million television watchers, O’Sullivan played about as well as he has ever played over the course of a match.