Andre Ayew's second-half equaliser gave West Ham United a deserved draw at Vicarage Road.
The striker scored in the 73rd minute when the ball rolled into his path after Michail Antonio's strike had hit both posts.
Watford led through Troy Deeney's third-minute penalty but the visitors had the better chances thereafter, goalkeeper Heurelho Gomes denying Jose Fonte.
West Ham held on for a point after Antonio was sent off for the first time in his professional career, Isaac Success missing a chance for a Watford winner at the end.
The result moves West Ham into ninth place, a point ahead of Stoke City who play on Sunday, while Watford are now in 12th.