Manchester United 2-1 Watford: Marcus Rashford and Anthony Martial give Ole Gunnar Solskjaer first w
Ole Gunnar Solskjaer said Manchester United seemed "on holiday" as his reign as permanent manager began with a laboured win over Watford.
The victory was harsh on the visitors, who dominated possession for long periods and had superior chances, but it lifts United into fourth place above Arsenal, who play on Monday.
Marcus Rashford's 10th Premier League goal of the season, after a superb through ball from Luke Shaw, gave United a flattering lead.
And as Watford wasted further opportunities to earn their first league win at Old Trafford, Anthony Martial made them pay midway through the second half with a close-range finish.
Abdoulaye Doucoure scored a late goal to fray the home fans' nerves further.
"It was a really nervy last five minutes," said Solskjaer, who was appointed on a three-year-deal on Thursday.
"They made it difficult for us and it seemed as though we were still on holiday or the international break. Both teams feel they should have points.
"When I won trophies here, we didn't play well in every game but [today] we lacked zip, urgency, and fitness."
The victory ended a run of successive defeats for Solskjaer, and took United level on points with third-placed Tottenham, who travel to Liverpool on Sunday.
Scroll down for video
Read more from BBC Sport
My view: Watford played much better but didn't take there chances Manchester United did.