It's very common for people to regard Funaki as Rickson's only credible opponent. Often overlooked is Daido Juku champion Yoshinori Nishi, who won the first Lumax cup, and founded the gym that produced Akira Shoji and Caol Uno.

This is Nishi in action against Shooto founder Satoru Sayama

At 6' 205# The 1984 and 85 Hokutoki championship winner was a lot more credible an opponent than Bud Smith(!)

Here's the JVT match

Rickson deserves credit for defeating Nishi; he was a highly skilled guy.