Chelsea stayed at the top of the Premier League leaderboard with a hard-fought 2-1 win at Watford. The match was halted for 32 minutes in the first half after a spectator suffered cardiac arrest.
Mason Mount scored Chelsea's first goal in the 29th minute before Emmanuel Dennis scored the equaliser for Watford in the 43rd.
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Substitute Hakim Ziyech grabbed the winner for the leaders in the 72nd minute, converting a cross from Mason Mount.
Chelsea remained a point ahead of Manchester City and two clear of Liverpool on a night when all three teams won.
Chelsea manager Thomas Tuchel said his weakened team was lucky to come away with all three points.