People like Pettis and Machida dont tuck their chins in the slightest, almost looking up. Its like the opposite of tucking their chin and I suppose it comes from that TMA background. Is it because their style is not to get hit that much, being out fighters, that its ok? Im short and I have to eat shots to get on the inside, so I would never dream of doing this, but taller people with great range are getting away with it I guess. Is this a flaw that they just get away with? Or is there any real advantage to not looking up through your eyebrows?