"I like the idea of him moving up to flyweight. The Robert Whittaker vs. Anthony Smith fight is very interesting to me in this division. I can see meaningful matchups for Robert Whittaker in this weight class from the start, and you know what I can't do? Name any interesting fights for Robert at middleweight right now. Nothing comes to mind at all.
Robert Whittaker vs Khalil Rountree is the main event of any tournament right now. I definitely support Whittaker in this idea of moving up in weight," MMA Junkie quoted Sonnen as saying.