Matt Crooks scored a 92nd-minute winner at Norwich City to earn Michael Carrick's resurgent Middlesbrough a third straight win away from home.
World Cup-bound Josh Sargent, who was named in the United States squad for the tournament in Qatar just three days earlier, marked his call-up by drilling home his ninth goal of the season - and first since mid-October - to put the hosts ahead early on.
Riley McGree levelled with a well-taken half-volley into the top corner with Middlesbrough's first shot on goal in the 64th minute.
As both sides searched for a late winner - with Norwich goalkeeper Angus Gunn dealing with a header from Chuba Akpom and Gabriel Sara seeing a shot pushed away by Zack Steffen at the other end - Crooks earned the visitors all three points with close-range finish.