Are you sure Rashad Evans was a pro boxer? boxrec has no record for him and I don't see how he would even have time, given that he was a star collegiate wrestler right up to the time he started doing MMA in 2004 and it was only a year between his MMA debut and his appearance on TUF 2.
A couple of examples of accomplished (although not world class) pro boxers that are also successful MMA fighters would be Marcus Davis or Chris Lytle.
I must have been mistaken. I was under the impression he was for some reason.
And Sduff05, yeah, this is in no way MMA vs Boxing. More of MMA with Boxing.
And classic boxing can help a lot in muay thai.