Colleyville Heritage’s offense was sputtering Friday night, having already rotated through three different quarterbacks midway through the second quarter against Irving MacArthur.Then Demarco Corbin and Ryan Phillippe brought the big plays. Corbin’s 21-yard touchdown run and Phillippe’s 27-yard interception return put Heritage up 14-10 on its way to a 24-10 win over MacArthur at Mustang-Panther Stadium in Grapevine.Corbin’s touchdown run was the biggest play of the night for a Heritage team sparked by its defense. Heritage improved to 4-2 and 2-1 in District 6-5A. Phillippe nabbed a second interception in the second quarter, stalling a MacArthur drive into Heritage territory. Linebacker Jared Vallilee had a second-half interception of Anthony James, who rotated at quarterback with Logan Austin. The Panthers also recovered a fumble in the second half.“[The defense] was huge,” Heritage coach Mike Fuller said. “They were physical, they got off the blocks, they stripped balls, they did everything you could ask a defense to do.” Max Allen, filling in for injured starter Holden Lyons, made a 20-yard field goal in the third quarter.Justin Toberny added a 1-yard touchdown run with 10:13 left in the game. He finished with 56 yards on 13 carries. Corbin led Heritage with 62 yards on 11 carries. Starting quarterback Griffin Pickler completed 6 of 12 passes for 28 yards. Trevor Anderson and Clayton Oliver combined for 18 yards passing.James finished 2 of 9 passing for 34 yards, but provided MacArthur’s lone touchdown with a 5-yard run on the first play of the second quarter. Artiss Henderson led MacArthur (2-4, 1-2) with 76 yards rushing.