[2] After completing his training and gaining ring experience in Europe around 1935, Leone migrated to the United States, arriving in New York City in early 1938.

[6] He would also appear at charity events to sell U.S. War bonds in Philadelphia, Pennsylvania often taking place at the Navy Yard Receiving Station in that city.

On June 26, 1944, Leone received his first "World" title match against Babe Sharkey (claimant to an East Coast version) in Wilmington, Delaware.

[6] On January 19, 1949, Leone made his return to the D.C. territory, wrestling in a losing effort against Gorgeous George in the main event.

With an abundance of wrestling television outlets in Southern California, and possessing the gift of the gab,[7] Leone - working for Doyle - became the biggest star in the L.A.

[4] Leone headlined several events at the Olympic Auditorium against opponents such as Leo Garibaldi, Jack Claybourne and Kimon Kudo.

On March 8, 1950, Leone wrestled future WWF Hall of Famer Antonino Rocca in front of a sold out 10,400 fans.

[7] Leone faced Enrique Torres at the Olympic Auditorium on November 22, 1950, in front of a reported 10,400 fans in a two-out-of-three falls match for the Los Angeles version of the World Heavyweight Championship.

[7] NWA World Heavyweight champion Lou Thesz came to the territory in July 1951 and, finding himself overshadowed by Leone, was reportedly unhappy with this status.

[7] Thesz addressed these concerns at the annual NWA member's meeting in Tulsa, where the prospect of eliminating the California-version of the world title (held by Leone) was discussed.

Doyle - a member of the championship committee - agreed to not book Michele Leone (or Enrique Torres) as champions outside of California.

[7] On May 21, 1952, Leone lost the L.A. "Olympic" version of the world title to Lou Thesz at Hollywood's Gilmore Field in L.A. in a unification match.

[2][7] Shortly after his final bout with Thesz, Leone retired from professional wrestling, being independently wealthy from his career.

Michele and Billie travelled frequently and Leone spent his later days partaking in various leisure activities by the Pacific Ocean.

[11][12][3] Symbolically, this was the same amount which Leone drew with Lou Thesz during their May, 1952 bout for the NWA Heavyweight championship; the first $100,000 gate in wrestling.