Do MMA fighters have glass chins compared to boxers? Seriously there's just way too many 1st round knockouts and even the guys with supposedly good chins like Lawler go down easy like he did yesterday. How many times do you see 1st round KOs in boxing on top level? Guys bang each other for 10, 12 rounds and survive until decision. It's very rare to see someone knocked out in the early rounds. A lot of MMA fighters are also rocked easily like Conor was against volume puncher Nate. I know that it has a lot to do with bad defending and walking straight into punches like Aldo and Werdum did but still... I guess is because most of those guys come from grappling background and their chins are untested until they enter the top of MMA. If you have a glass chin in boxing you'll most likely be weeded out relatively early. Watch a good boxing scrap like Maidana vs Soto Karass if you want to see how durable boxers are compared to MMA fighters. I'm sure if MMA fighters would be hitting each other with those shots they'd be wobbled after 2 rounds and there would be some flash knockout early.