I think Guida and Buentello are easily the bets of the night. Buentello doesn't have a great ground game but Struve was knocked out in quick fashion against the only legit standup threat he's ever faced. Buentello has been submitted 3 times (7 total if you count the times he's tapped to strikes). That being said, he has good takedown defense and Struve is really thin and lanky. I'm a little worried about the clinch knees but I didn't see enough of Struve's ability to strike to be concerned. I think he eats a big punch and goes down.
