Let's pretend the sport started in July 2015. Nothing before then counts. In other words, GSP is a non-entity. Anderson is 0-2. Off the top of my head, Michael Bisping is the USADA-era GOAT. 3-0 with wins over Leites, Anderson, and Rockhold. MW champ. I'm sure there are other worthy contenders. Maybe even better than Bisping. What say you?