I am a big fan of Adamek. What's there not to like? But, I believe he's biting off more than he can chew fight at heavyweight. Estrada is a small heavyweight, but he is a heavyweight nonetheless and he'll be faster than Adamek and probably will punch harder. I could see Estrada pulling off the upset win and sending Adamek back down to cruiser. Even if Adamek squeeks by Estrada, he'll be viciously knocked out by Arreola in five or six.