Boro jinx returns to haunt United
Goals from Alen Boksic and Szilard Nemeth either side of half-time gave Boro the advantage, and although Ryan Giggs pulled one back on the hour, Joseph-Desire Job made sure of the points five minutes from time to condemn United to a second successive Premiership defeat.
It was the third time McClaren has turned the tables on former boss Alex Ferguson since leaving Old Trafford for the north-east two summers ago, and preserved an unbeaten home run of 11 matches this season.