As a sophomore in 1929, Morrison was already a significant contributor at the fullback position. When Morrison finished his freshman year, he "was rated the outstanding fullback prospect in Michigan history." In the fall of 1929, Morrison missed five games at the beginning of the season due to injury. Then, against Illinois, he was placed in the lineup at tackle and became "the individual star of the Wolverines by a wide, handsome and undisputed margin." On defense, he was taken out of the line and played at defensive fullback, and when an Illinois back found a hole in the line, Grantland Rice wrote that “Morrison usually picked him up bodily and hurled him back into the breach in the wall.” And occasionally, "he was content with merely smacking the ball carriers against the ground as they