I am hesitant on Hawn, Heiron is the best competition he's fought. The judo credentials are legit, but I still haven't really seen him in with a great striker.
Heiron may have gotten away with one in the Weedman fight and Hawn brought it.
Yagin really surprised me in the Hominick fight. I'm still worried it says more about where Hominick is at this point. Even in a fight he was clearly winning, he still ended up gassed and Siver can really push the pace. I think I'm going to try to find some more Yagin fights and see if the low hooks are a trademark.