This is quite a mystery for me, he has been hit a few times but really I can count the amount of big shots he took on one hand, so as of now how do you rate his chin?
I think it's hard to rate now, but I suppose it's fine. Floyd was hit few times, and we know now that he has fine chin, but it was tested for the 1st time maybe in the Corley fight, when he already had 30 fights.
I don't even know who the fighter is who dropped Loma. Loma's chin is iron but it's like hot iron because it's not the easiest thing to put your hands on.
147 lbs salido landed a lot of clean blows and Lomachenko took it well. I think any other in his weight class would have been stopped that night. It might not be a 10 but it's no less than a 9, and you can see that from the confidence he has in the ring. While being slick, he's not afraid to take 1 to land 1.
I don't think we have enough information yet to properly evaluate. But I'd say, at the very least, it's fairly good.
I think he has a good chin but its hard to say as we havent seen him take a big shot. Salido might have cought him a couple times as someone mentioned but i dont remember seeing a shot that made caught my attention.