The people using the word blindside in this thread are ridiculous, they should put a word in the rule called peripheral vision to help people who haven't played figure out that just because a guy comes across to hit another doesn't mean if their head is up they cant see the guy. One of the first things I was taught in hockey was to use my peripheral vision to avoid hits. When they come from the angle Cooke did, then yes that is blindside, but when the guy making the hit comes BLATANTLY form in front of a guy, if they have their head up they will see him.
Ok coach, how does Horton avoid this one? He's gliding into center ice while Lucic is lining up to receive the pass and Rome is lining up to hit him. He is moving pretty slowly and couldn't get out of the way if he tried to. Which, of course, would have required his knowing that the hit was coming. Just because Rome's final motion was to hit Horton towards center ice doesn't make this a north-south hit; he was skating east-west for a good distance directly before he threw the hit. That makes it a blindside hit. Whether Horton should have seen him is irrelevant; especially as Horton wouldn't have been able to avoid him anyway.