A 15-0 run in the fourth quarter powered the Orlando Magic to a 111-100 victory over the visiting Detroit Pistons on Saturday for their eighth win in their last nine games.Orlando, undefeated at home this season, led most the way but found itself in a competitive contest heading into the fourth quarter. Isaiah Stewart’s layup to open the final period pulled the Pistons to within seven points.The Magic then demonstrated the defensive tenacity that has them holding opponents to the NBA’s lowest scoring average. Orlando did not surrender a point for the next 5:31, while going on its offensive run.The Pistons shot 46.7 percent from the floor, and the Magic defense forced 17 turnovers, which Orlando converted into 29 points.Big men Goga Bitadze and Jonathan Isaac led Orlando’s defense on the interior, each blocking three shots. Isaac also had two steals to go with his 12 rebounds off the bench.Gary Harris also came off the bench and made three steals for the Magic.