first of all, i love rich. he's a great fighter. but we've seen that he clinch game is very flawed in both of his last fights.
against anderson, he maybe gets a pass. i mean, anderson's MT clinch is second to none. however, you'll note that he absolutely no answer for it, and looked down often- which is bad news if you don't like getting kneed in the face (i hear he doesn't).
in the macdonald fight, he had a tough time in the clinch too. he couldn't get out of it, and made the same mistake of looking down.
okami is very, very strong in the clinch. if rich lets him clinch, okami will do the same thing he always does, which is suck rich in and muscle him to the ground in kawajiri-like fashion.
i'd actually like to see rich win this one because i think okami is boring, but i think it's a very bad matchup for him unless he's done some serious clinch work.