As an MMA fan, I think the majority will also bet for Islam to win since he is the bigger man in the octagon and can manage to takedown Volka which is his key to winning. Particularly they can choose Win by Submission. Your offer may not be taken by anyone actually. They can bet on thier own.

So many MMA blogs already and there are podcasts about it including the popular Joe Rogan's, that would put your blog unnecessary actually unless you offer worth more than they know.