Fitzsimmons, I just don't see anyone much smaller than him dealing with his power for long duration fight.
Ryan was a wrecking machine at welterweight, and a punishing hitter at middleweight, but I think that Fitzsimmons would be too much for him.
Ryan was an absolute animal, but to reiterate what's already been said, he isn't beating Fitzsimmons. Both of these two seem to get more and more underrated every day.