DURHAM - The North Carolina men's soccer team had not scored a single goal against Duke in three years. That all changed Sunday when the No. 12 Tar Heels exploded for four goals en route to a 4-2 upset against the No. 5 Blue Devils (5-4, 2-1 in the ACC) at Koskinen Stadium. After trailing 1-0 at halftime, UNC (8-2, 2-1) attacked with a newfound enthusiasm, putting the ball past Duke goalkeeper Jeff Haywood four times. "Coach (Elmar Bolowich) told us at halftime to keep our heads up," North Carolina midfielder Eddie Robinson said. "He said that we were playing better and outshooting them.