Pretty interesting fight. You don't get to see it much but Chael is EXCELLENT at regaining or establishing top position on the ground. If Jones takes Chael down I bet he ends up swept, then we can see how Jones responds to being on bottom. I bet he turtles/holds on.
That's not saying Chael will win. Just that I fully expect to see Jones on his back losing at some point during this fight.
JBJ has never been taken down! I've never seen either one of them fight from their back so it'll be interesting.