José Mário Sperry, a Brazilian heavyweight mixed martial artist, trained a retired Brazilian mixed martial artist who in submission wrestling, he holds an undefeated record of what?
Mário Sperry: José Mário Sperry (born September 28, 1966) is a Brazilian heavyweight mixed martial artist. Mário Sperry:  He is also one of the founders of the Brazilian Top Team, where he trained fighters such as Antônio Rodrigo Nogueira, Antônio Rogério Nogueira, Ricardo Arona, and Paulo Filho, among others. Ricardo Arona: Ricardo Arona (] ; born July 17, 1978) is a retired Brazilian mixed martial artist. Ricardo Arona:  He has notable wins in both MMA and submission grappling competition over Tito Ortiz, Jeff Monson, Renato Sobral, Vitor Belfort, Mark Kerr, Kazushi Sakuraba, Wanderlei Silva, Dan Henderson, Alistair Overeem, Murilo Rua, Jeremy Horn, Guy Mezger, and Dean Lister.
i don't know