Thanks for the advice. I had major reservations because it just seems like somebody must know something. I googled Uchiyama, even in Japanese. The only articles I found were the usual stuff about how he's prepared and wants a KO. I watched everything I could find on Vasquez and he's a good fighter, but he's not in Uchiyama's class. Still felt like I must be missing something. So I'm a bit more at ease after your explanation.
I tried to find a record confirming the line movement for you, but all that I came up with is a post on the boxrec form (no, it's not my post, I don't post there). About 8 posts down he says Vasquez started at +850.