Originally Posted by cross_trainer
He had several exhibitions in which he did quite well against Ernest Roeber, who was the European champion in Greco-Roman wrestling at the time. Also trained with Farmer Burns in catch wrestling, and was doing exhibitions with the latter as late as 1910. Burns considered him to be quite good.
No formal credentials (there really weren't any in those days, to be fair), but he certainly mixed with some of the best wrestlers of his day.
Damn, I was hoping there would be some sort of AAU records or something, but yea, its pretty clear he was a very legit Greco guy.