From an interview with Fighthype.com:
PC: How do you see a fight between you and Kimbo playing out?
HR: I see him getting knocked out quick!
PC: This is actually a fight where most people would feel he has an advantage on the ground. How do you feel about that?
HR: All fights start standing up, which is my advantage. Kimbo would get knocked out trying to take me to the ground. A lot of people forget I was a street fighter before I became a boxer. I was so good at fighting on the street, people said you should start boxing.
PC: Is there any way possible Kimbo stands and bangs with you for 15 minutes?
HR: He wouldn't have the heart to do something stupid like that.