Nate is 36 and will be undersized. He's a guy who would be appropriate for 165lbs division, but doesn't want to diet down to lightweight at this point in his career.
The best Nate Diaz is lean and in shape boxing up Michael Johnson. At welterweight he's soft and substantially smaller then guys like Leon.
Five years ago this would have been a competitive fight. I don't like to put expectations on aging guys at 170lbs and below, its not where you want to be fighting the wrong side of 35.
Nate is always a live dog since he's a finisher when an opportunity presents itself, but this is a fight that should not have been booked. This is a gimmie fight for Leon and he's going to make it look easy.