‘Powers-Johnson, who was one of the stars of the Senior Bowl before leaving midway through the second practice with a hamstring injury, has a great combination of agility and size. The 334-pounder would immediately be one of the largest centers in the NFL, but he moves like someone 20 pounds lighter. He is a downhill blocker, but Buffalo would love his size in the middle of an offensive line that has renewed its commitment to running the ball.’