Satterfield was a good enough boxer to once outpoint Harold Johnson. I think he protects his chin sufficently against the much slower Firpo and bombs him out. Obviously, Firpo only needs one clean punch though and has a live puncher's chance, but I would put my money on Satterfield. I would really love to see this one.
Satterfield would be a sitting duck, one good punch from Firpo would put him away. He'd be up on points due to his superior boxing skills, but eventually I think Firpo could catch him, if he hasn't been KO'd himself.
