Who had the greatest chin of SMW ever?

Is there any great SMW that has never been down?

Collins has been down due to a body-shot against a no-namer, but I guess that he has never been down for a head-shot.

-So far Kessler has never been down but maybe it is hard to already consider him great?

-Ottke?

Before the RJJ fight everyone was on about Merqui Sosa's chin... ;)

As far as World Class 168lbers go (post 82), I would say Juan Carlos Gimenez.