I might actually pick Nazarov here. Guy was one of the most underrated lightweights ever. Like Winky Wright with power.
I pick Naz, although I'm bias because I really like him. I think he's pretty bad for JLC, because he'd be able to push him back and has that massive power.
Did we ever see Nazarov tested in a real battle? I'd be leery of favoring anyone over Castillo who hadn't been.
The Thobela fight showed he could overcome adversity, and he showed massive heart and a great chin vs Mendy.