Not gonna be much help on this card, but a couple thoughts.
First, I think Gall might be getting a bit undervalued because of that turd he laid vs Diego. But given that he had Rabdomyalsis it's far more understandable. The guy's kidney's were shutting down. He's a legit grappler, had competed and shown well with the best in the world (literally against probably the best grappler on the planet right now). His striking is rudimentary but he seems to have a good chin and isn't afraid to throw heat in the pocket. I kinda think he should be a slight favorite here, not a slight dog. Assuming he's over the kidney issues, I think he wins.
Robbie dec +850 might be worth a small stab. If Colby is worried about Robbie's power but Robbie's TDD mostly holds up, we could see tons of wall n stall by Colby. If that happens and Robbie gets the better of some exchanges, judges may reward Robbie more for that than Colby for shoving him against the cage. I don't expect it to hit, but pretty nice odds for a fight that the odds say is about 50/50 to see the cards. If you want to get even more froggie, a tiny stab at Robbie split/majority dec at +16xx seems alright.
That's it guys, BOL!