Derrick Henry’s star went supernova in the 2018 playoffs. Over Weeks 14 and 15, he totaled more than 400 yards and scored six touchdowns. With a solid Week 16 performance, he notched 94 fantasy points in the playoffs, the 13th-best playoff total since the turn of the century, and one of only six 90-plus performances this decade. It comes as no surprise that new offensive...