There was no hotter player in Duke’s win over Michigan State than Grayson Allen. The senior, who scored a career-high 37 points against the then-No. 2 Michigan State on Nov. 14, was on fire that game – and he was the primary reason the Blue Devils won after Marvin Bagley III, the freshman forward, left the game after being hit in the eye in the first half. The Blue Devils needed Allen, and he delivered. But in the games following that performance, Allen went through a cold stretch. Never miss a local story. Sign up today for a free 30 day free trial of unlimited digital access. SUBSCRIBE NOW The 6-5, 205-pound guard, scored 10 points (3-for-9) against Southern on Nov. 17. He scored a season-low 5 points (2-for-9) against Furman on Nov. 20. And over the next three games, he never scored more than 14 points in any game. Part of Allen’s low scoring can be contributed to Bagley, who had strong performances during that stretch. Bagley often had the matchup advantage in the post, and Duke went to him often. But Allen was also missing his shots. Over that five game stretch he shot 33 percent, 22 percent, 29 percent, 36 percent and 42 percent from the floor. Duke coach Mike Krzyzewski said two weeks ago that Allen was banged up. The coaching staff kept him out of some practices, too. “I think it’s December 2 and we’ve played 10 games,” Krzyzewski said Saturday. “We’ve actually, in the last month, played more than we’ve practiced Grayson.” Injuries slowed Allen during his junior season at Duke. After averaging 21.6 points per game as a sophomore, when he was the primary scoring option along with Brandon Ingram, his points per game average dropped to 14.5. Duke also had a number of different scoring options last season. Allen was sometimes tasked with playing the point guard. But prior to this season, Allen said injuries were the biggest factor. “I had a lot of them,” Allen said in November of the type of injuries he had last season. “Ankle, toe.” Allen, who has never been shy from taking contact, sometimes resulting in him crashing to the floor, said Thursday that he had been nursing a wrist injury. But his wrist is now “100 percent” healthy, he said. It looked that way