Thoughts on the main event:
This fight is most likely to end within the first two rounds. I think Islam's wrestling pressure is going to be overwhelming and Volk is simply too small of a fighter to trouble Islam on the ground.
But if the fight actually gets beyond the first two rounds, then I like Volkanovski. Simply because I think he will have the cardio in his favor.
It's a real uphill task for him. If he wins you simply have to put him in the convo as one of the greatest mma fighters of all time.