Do folks remember how good Allen was last season before a kidney injury cut it short at the midpoint? Over the first half of 2015, Allen had himself on pace for 135 catches and nearly 1,500 yards as Philip Rivers’s top target. One of his top traits coming out of Cal was his ability to adjust his game to any spot, inside and outside, and he has maintained that chameleon-like development with the Chargers. His health is a growing concern—Allen has yet to play a full 16-game schedule. That’s about the only thing holding him back from claiming an entrenched spot as a dominant No. 1 receiver.