I'm a big fan of Whittaker, and I'm scared his chin is getting depleted at a fast rate. This is not something you want when fighting Kelvin Gastelum. Gas hits hard. Whittaker usually has an amazing chin for MMA, except for the Wonderboy loss. In his recent fight with Yoel Romero, he took many heavy shots and got dropped 2-3 times and was on wobbly legs once or twice as well. I'm scared that Bobby Knuckles' chin is not what it used to be. Both Yoel fights were hard fought decisions, with the 2nd one being a questionable decision because of all the damage he received. Will his chin be ready for Gas?