Except Hammond does nothing to protect the team except maybe his area denial ultimate. He is a good disruptor, but for that he must be played really well and healed accordingly. Have seen some good Hammonds, but sadly lot more picks with him were mediocre at best, last one I got Hammond on my team he kept dying all the time focused not doing anything of value, we could not defend or push neither with him.
Quite frankly, I would prefer a Zarya or D.va as off-tank picks.