Swansea were the architects of their own downfall as some poor defending gifted the winning goal to Richarlison in the final minutes of the match.
Andre Gray opened the scoring for Watford after just 13 minutes, taking advantage of a loose interception from Sam Clucas and finishing smartly passed Lukasz Fabianski.
Tammy Abraham came off the bench to equalise but Richarlison regained the lead for Watford in the 90th minute after taking advantage of some calamitous defending.
More to follow...