It troubled a young Ezzard Charles. Plus Fred Apostoli, Billy Soose and Al Hostak. So I don't see why it wouldn't give Walker problems as well. But I'll take the Toy Bulldog by UD.
If Mickey fought a very competitive fight with Greb in 1925 that Greb had to finish strongly to win, then he should be able to edge "the poor man's Harry Greb". The limited footage of Overlin I've seen I was impressed wirh his movement and volume, so I wouldn't be surprised at an Overlin decision. It would come down to whether Mickey could mount a body attack in the early and mid rounds. Too bad Overlin vs Charles isn't available on film...
Ya know the Overlin rematch vs Ezzard was officially ruled a draw with one of Ezzards cincy hometown paps of the opinion Ken deserved the verdict.