On 57 minutes, Antonio Conte rolled the dice. For just short of an hour, the Italian coach had seen his side toil hopelessly.
Chelsea were rotten, sloppy and misguided on the ball and sleepy outside of possession. Leicester were simply better in every department.
Claude Puel's side had five clear sights of goal within the opening 15 minutes alone and only the profligacy of the away side's forwards, combined with the brilliance of Thibaut Courtois, spared Chelsea the haunting deficit their play merited.
The half-time statistics told their own story.