Chuba Akpom scored his 14th Championship goal of the season to set Middlesbrough on their way to victory over Watford
Michael Carrick's Middlesbrough side leapfrogged Watford and moved up to third in the Championship table by winning the meeting of two play-off hopefuls.
The Teessiders handed on-loan Aston Villa striker Cameron Archer a debut, and he played a big part in the opening goal, eventually scored by Chuba Akpom, his 15th of the season.
With midfielder Dan Barlaser watching from the stands ahead of his imminent move from Rotherham, Boro forged ahead in the 36th minute when Archer's pace took him clear of the Hornets defence.
His touch deserted him and afforded Watford keeper Daniel Bachmann the chance to block his shot, but the ball lobbed into the air and Akpom, despite slicing his attempted volley, was able to follow up and head into the empty net.
Boro sealed the three points in first-half added time when Jonny Howson threaded a neat pass into the path of Marcus Forss, racing inside off the right wing.
He ran across the face of the defence and, with Bachmann advancing, reversed his shot into the corner.
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