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LONDON -- Sometimes, a decisive victory is down to luck, nerve and months of practice rolling into one to carry a team toward the finishing line.
Had John Stones not missed two golden chances for Manchester City -- only he will know how he volleyed over from six yards in the 92nd minute -- or had Fernandinho not been similarly wasteful from close range six minutes into the second half, Chelsea might sit seven points clear at the top of the Premier League.