Match ends, Manchester United 1, Watford 0.
Scott McTominay's fourth-minute header was enough to give Manchester United an unconvincing victory in their FA Cup third-round tie against Watford on Saturday.
Wearing the captain's armband for the first time in a much-changed side from Wednesday's Carabao Cup semi-final defeat by Manchester City, McTominay found the net after rising to meet Alex Telles' corner.
The hosts did have chances to increase their lead, but Juan Mata failed to find a finish to an excellent three-man move just before half-time, then Daniel James and substitute Marcus Rashford had shots saved after the break.
But none of those opportunities were better than that for Hornets defender Adam Masina, who saw his effort blocked by United keeper Dean Henderson not long after McTominay had struck.
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Now under their fifth manager in two years, Xisco Munoz, Watford had other chances too - Joao Pedro's header went straight to Henderson and Ken Sema was off target with his.
Mason Greenwood and Donny van de Beek did little to press their claims for a regular starting slot in manager Ole Gunnar Solskjaer's first-choice side, while Jesse Lingard - making only his third appearance of the season and the subject of interest from a number of clubs in the January transfer window - showed glimpses of form but eventually faded.
United will go into the hat for Monday's fourth and fifth-round draws, while Watford are left to focus on winning promotion back to the Premier League at the first attempt.
No risks with Bailly
Given the increasing awareness of the effects of concussion, the decision of United's medical staff to take no risks with defender Eric Bailly when he was caught in the head by Henderson's knee as the keeper punched clear was a welcome one.
The Football Association had hoped to introduce concussion substitutes by now but it has not yet been able to as detailed protocols are yet to be received from Ifab, the world game's rulemakers.
As Bailly was guided towards the tunnel in the last minute of the first half, Maguire replaced him and helped United keep the clean sheet which ensured they reached the fourth round for the 34th time in their past 36 attempts.
Afterwards, United manager Ole Gunnar Solskjaer said: "I think it was his neck. I don't think it was concussion so that is a positive. But we have got to do scans."
Watford's miserable run at Old Trafford continues - stats of the day
- The last time Manchester United failed to progress in the FA Cup third round was January 2014, when they lost 2-1 to Swansea.
- Watford have lost on 10 consecutive visits to Old Trafford, scoring just three goals.
- United have progressed from each of their past 17 FA Cup matches against opposition from a lower division, since a 1-0 home defeat by League One side Leeds United in January 2010.
- McTominay has scored four goals in 22 matches this season, one short of his best tally in a campaign (five goals in 37 appearances in 2019-20). Three of those goals have been scored in the first five minutes of games.
- Watford attempted 18 shots in the match - only in their 2-0 loss at Huddersfield (21) have they had more shots on the road this season.
Line-ups
Man Utd
Formation 4-2-3-1
- 26Henderson
- 33Williams
- 3BaillySubstituted forMaguireat 45+5'minutes
- 38TuanzebeBooked at 65mins
- 27TellesBooked at 72mins
- 39McTominay
- 34van de Beek
- 8Mata
- 14LingardSubstituted forMaticat 80'minutes
- 21JamesSubstituted forRashfordat 68'minutes
- 11GreenwoodSubstituted forMartialat 69'minutes
Substitutes
- 1de Gea
- 5Maguire
- 9Martial
- 10Rashford
- 17Fred
- 18Bruno Fernandes
- 25Ighalo
- 29Wan-Bissaka
- 31Matic
Watford
Formation 4-4-2
- 26Bachmann
- 32Navarro
- 5Troost-EkongSubstituted forWilmotat 76'minutes
- 31Sierralta
- 11MasinaSubstituted forNgakiaat 58'minutes
- 23SarrBooked at 38minsSubstituted forSemaat 58'minutes
- 14ChalobahSubstituted forPhillipsat 84'minutes
- 19Hughes
- 7ZinckernagelSubstituted forHungboat 76'minutes
- 10João Pedro
- 18Gray
Substitutes
- 1Foster
- 3Ngakia
- 6Wilmot
- 12Sema
- 40Dalby
- 41Barrett
- 44Hungbo
- 49Crichlow
- 52Phillips
- Referee:
- Andy Madley
Match Stats
- Possession
- Home66%
- Away34%
- Shots
- Home19
- Away18
- Shots on Target
- Home7
- Away3
- Corners
- Home4
- Away8
- Fouls
- Home12
- Away13
Live Text
Post update
Full Time
Second Half ends, Manchester United 1, Watford 0.
Post update
Nemanja Matic (Manchester United) wins a free kick in the defensive half.
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Foul by Francisco Sierralta (Watford).
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Attempt blocked. Marc Navarro (Watford) right footed shot from outside the box is blocked.
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Foul by Scott McTominay (Manchester United).
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Will Hughes (Watford) wins a free kick in the attacking half.
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Attempt missed. Juan Mata (Manchester United) left footed shot from outside the box is high and wide to the right from a direct free kick.
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Anthony Martial (Manchester United) wins a free kick in the attacking half.
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Foul by Daniel Phillips (Watford).
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Anthony Martial (Manchester United) wins a free kick in the attacking half.
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Foul by Ben Wilmot (Watford).
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Foul by Alex Telles (Manchester United).
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Joseph Hungbo (Watford) wins a free kick on the right wing.
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Foul by Nemanja Matic (Manchester United).
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Joseph Hungbo (Watford) wins a free kick on the right wing.
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Scott McTominay (Manchester United) wins a free kick in the defensive half.
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Foul by Jeremy Ngakia (Watford).
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Corner, Watford. Conceded by Harry Maguire.
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Attempt blocked. Joseph Hungbo (Watford) left footed shot from outside the box is blocked. Assisted by João Pedro.

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Comments
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we are rank rotten, can't pass, can't win the ball at corners, can't take chances up front
all this passing out from the back, we just can't do it, our defence isn't good enough
win the EPL not in my wildest dreams...we are kidding ourselves on we're good
Great to get a scrappy win and see who can't even cut it against Watford
I was going to give everybody a 1 anyway
#Lingardhino #Greenwoodaldo #MessiJames
Watford and Manchester United not showing much..