 Mosberg boxed in Australia in 1922, losing a decision to new Australian national lightweight champion Hughie Dwyer in a long and grueling twenty-round non-title fight in Brisbane on November 25, but defeating 5-foot-3-inch Filipino Silvino Jamito on December 9, who lacked his reach and power, in another twenty-round bout.In the Dwyer bout, Mosberg received a hard bash in the second that rocked him, but dropped Dwyer briefly in the sixteenth, using an effective defense to remain on his feet throughout the historic match.Mosberg later claimed Dwyer was not a hard puncher, and typical of his English style, favored long-range boxing and retreating to the close-range infighting that was characteristic of American boxing in the era.