Jose Mourinho has now lost three consecutive games for the first time as manager since 2002.
This also marks 30 years since Watford has beaten Manchester United.
A remarkable display from Watford, with a 100% work rate and they took the advantage as United made many mishaps.
Goals from Capoue, Zuniga and Deeney canceled out Rashford’s equaliser.
Watford 2 – 1 Manchester United, The Managers Reactions:
Manchester United Boss Jose Mourinho’s reaction to Manchester United’s 3-1 loss to Watford
“I reflect on three factors from the match, but only one of them I can improve.
“The first factor depends on ourselves, it relates to our individual mistakes and collective mistakes as individual players and as a team. We have to improve something, it is in our hands.
“The second factor is the referee and I can’t control their mistakes, The story of the game is the result and not the ridiculous situation of the first goal.
“The third factor is luck, we didn’t have it. We were the best team when we lost. Heurelho Gomes made a phenomenal save from a Zlatan Ibrahimovic header.”
“We started the season very well and had good results. I feel the first moment we had a defeat, a difficult situation, some of the boys are having a bit of difficulty coping with the negativity.
“You see Ashley Young, his mentality the happiness and confidence he brought to the game is something more players need to have.”
Watford captain Troy Deeney speaking to BT Sport:
“It is nice for us to get back-to-back wins. We have had the toughest start of any club. To come out with seven points is massive for a club like us.
“I am not surprised by how we played. We should take a bit more credit, we pressed well, condensed the space and were tough in the tackle. We need to be against teams like Manchester United who have high quality players and spend a lot of money.
“We have some really good quality players and men in there, which is the hardest part, I thought we were the better side and had a lot of chances, even when they scored we showed what we are made of and came again.”