Blip happens. That's a fact. In any title chase, there will be a moment of uncertainty for the leaders and Chelsea may be about to have theirs now across five days of extremes.
Crystal Palace and Manchester City are polar opposites: one resolute, the other breathlessly cavalier. Having been shut out by Palace on Saturday, Chelsea must now find a way of doing the same to the most ambitious team in the Premier League at Stamford Bridge on Wednesday night.
The worst-case scenario for Antonio Conte is a lead cut to four points, if Chelsea lose and Tottenham win at Swansea.