Seriously. If I was in the NBA I'd just play extremely physical against Ingram. He can't handle grown man strength at this stage of his career. Not even close.
Twiggy Mcgee couldnt guard a chair at this point.
This is where I miss the more physical play of past eras. If I were posting him up, I'd drive my shoulder straight into his chest and knock him back. Or if I was boxing him out, I'd use lower body strength to drive him aggressively out of the paint. Nothing dirty but I'd try to make him feel as weak as he is. Even if it resulted in an offensive foul or two. Physical trash talk if you will.
He has no business guarding some of the players in the league, but the league is so perimeter oriented (and soft) that he doesn't pay for it often enough.