Killer Kowalski
From March 1966 to June 1966, Bockwinkel wrestled in Australia with the World Championship Wrestling promotion. In his first appearance, he won a "Russian Roulette" battle royal in the Sydney Stadium. His regular opponents included Killer Kowalski, Pampero Firpo, Toru Tanaka, Waldo Von Erich, and Larry O'Dea.