Question: Who was the American boxer, trainer and commentator born on July 7, 1944 that had connections to Mickey Goodwin?
Sentence (from "William I. Mott"): They were so successful that Van Berg was named leading trainer at Arlington Park and leading trainer in the Nation with 496 wins in 1976, a record that stood until Steve Asmussen broke it in 2003 with 555 wins.
Relevant evidence: No