The third submission only all-star fight card is on tomorrow and I love watching grappling matches of any sort... although the problem with this one is it starts at midnight so I doubt I'll much if any of it live.
My thoughts on the fights...
Zak Maxwell vs. Sean Roberts
From memory Maxwell has the better results overall but it's a tough one to call under Metamoris rules really.
Gui Mendes vs. Samir Chantre
A three time world champion vs. a guy around the same size who hasn't won anything really major. Mendes submission.
Dean Lister vs. Babalu
Tough to know what sort of size/shape Babalu is... his MMA career went off quickly after he'd spent a long time as a top contender. Can't see Babalu tapping Lister and he'll have a tough time not getting caught in something.
Keenan Cornelius vs. Vinny Magalhaes
Really tough fight to call. Keenan has showed he can mix with the top level of black belts but Magalhaes is an ADCC champion and could be much bigger. Maybe Keenan catches a tired Magalhaes late in the fight.
Rafael Mendes vs. Clark Gracie
Clark is good but Mendes is a different class. I don't think the weight difference will matter, both Mendes brothers get submissions.
Royler Gracie vs. Eddie Bravo
The sort of fight that has been discussed so much I don't care. Pretty much impossible to call, when was the last time either fought? I think the most likely options are either Royler wins quickly or it's a pretty boring match.