Watford return to Premier League after win at Brighton
The Hornets won 2-0 in their lunchtime kick-off at the Amex Stadium, then saw Championship promotion rivals Middlesbrough and Norwich both drop points later in the day.
They secured their fifth-successive victory thanks to goals from Troy Deeney and Matej Vydra.
Watford are four points clear of third-placed Boro with one game to go.
The other results ensured Slavisa Jokanovic's side are back in the top flight after an eight-year absence.
Middlesbrough were beaten 4-3 in a dramatic finish at Craven Cottage - in a fame where they fought back from 3-1 to 3-3. At that stage Norwich were also winning at Rotherham. But the Championship strugglers salvaged a late point.
It all came good for Watford who can lift the title by beating Sheffield Wednesday at Vicarage Road a week on Sunday - May 3rd.