Juice is one of those players whose box score never explains why the coaches love him. He only had two carries last season, but he started every game, caught 24 passes for 213 yards and kept letting the offense disguise what it wanted to do. He can lead through the hole, pick up a blitzer, line up outside and actually run a route instead of just standing there as a decoy. At this point he is 35 and entering year 14, so it is fair to wonder how long he can keep doing all the dirty work at the same level. For now, though, he is still a seven because very few fullbacks give an offense this many answers.
Strengths: His football intelligence and versatility are the whole package. Juszczyk understands angles as a lead blocker, recognizes pressure, catches the ball naturally and can shift across the formation without tipping the play. That flexibility helps San Francisco create favorable matchups before the snap.
Weaknesses: He is no longer an explosive ball carrier, and the offense should not expect big plays from a 35-year-old fullback. Some quicker defenders can beat him to a landmark in space, while bigger edge players can overwhelm him if the angle is late. His value depends more on precision than raw physical advantage now.