UFC 153 Silva vs. Bonnar on Saturday at the HSBC Arena in Rio de Janeiro, Brazil, gives our second straight pay-per-view headliner with an extremely lopsided betting line. However, the gasps heard during Vitor Belfort’s armbar attempt on Jon Jones at UFC 152 reminded us never to count out an underdog and that even perceived mismatches can still lead to exciting performances. The Ultimate Fighting Championship’s marketing team has even acknowledged this reality in some of the promos -- we could see a skilled and thorough finish or we could see a truly historic upset. They are promising a “fun fight.” The greatest fighter on the planet, Anderson Silva, is competing, and Stephan Bonnar is back in the Octagon; those are two great reasons to tune in.