Jose Mourinho's Manchester United reign is quickly unravelling, with his new team condemned to a third successive loss by Watford on Sunday.
Watford's 3-1 victory exposed the brittleness of Mourinho's expensively assembled team as it tasted success over the record 20-time English champions for the first time in 30 years.
The United job was a chance for Mourinho to rehabilitate his career after being fired last year for a second time by Chelsea. But after a bright start to the campaign in August, Mourinho's United has lost to Manchester City, the Europa league opener at Feyenoord and now Watford within nine days.
Although 18-year-old Marcus Rashford marked his first start of the season for Mourinho by canceling out Etienne Capoue's opener, Watford surged back in front in the final seven minutes at Vicarage Road.
Substitute Camilo Zuniga scored from his first touch and Troy Deeney netted a penalty in the fifth minute of stoppage time.
It's only five games into the Premier league season but United is already six points behind leader Manchester City. Watford is two points behind United in eighth place in the early standings.
United's abject state was clear early in the game. Only Odion Ighalo's miss spared United from an early setback. David de Gea dropped a high catch as both the United goalkeeper and defender Chris Smalling went for the ball. Ighalo was presented with an open goal but rather than control the ball, he missed the target as De Gea watching in astonishment.
A key intervention by Miguel Britos created Watford's goal. The Uruguay defender's challenge on Martial on the right flank, tripping the winger, was deemed permissible by referee Michael Oliver.
Daryl Janmaat seized possession and cut the ball back to Coupe on the edge of the penalty area. But as the goal was scored in the 34th minute, Martial remained on the turf, awaiting treatment. The Frenchman couldn't continue, hobbling off with Ashley Young taking his place.