For me, I was never a big fan of Donaire until last Saturday. He won me over as a fan. Same with Floyd after he fought Cotto. I became a fan, or at least realized it.
Loma after he beat Russell Jr. He beat a game Russell Jr who that night would have given everyone at 126 hell. I became a fan. Fonfara Really had no opinion of him other than he beat a old Glen Johnson but he made a fan out of me for the way he took it to Stevenson even in defeat. Emmanuel Taylor Thought he looked like wasted talent against Algieri. Bounced back with a hell of a gutsy performance against Broner a fight in which many thought he would be slaughtered in including me.
Of course Seth Mitchell and David Price, but those are obvious. Mchunu after the Chambers fight. I thought he would just be an easy victim (wich was probably what he was expected to be) for Eddie but instead he gave him a boxing lesson, and now I think he's one of the top3 Cruisers out there.
Donaire is the most recent. Kell Brook is another that comes to mind. Lomachenko. Can't recall any others at the moment.