sentences:  Frank Packer's launch of the Sunday Telegraph in 1939 undermined the viability of the Sydney "Truth" and he attempted to fight back by establishing a daily paper to compete with the "Telegraph" and "The Sun" in which he succeeded despite wartime paper rationing.Frank Packer and Ezra Norton were bitter rivals in business for many years.On Derby Day 1939, Ezra Norton and Frank Packer fought it out literally, with fists, in the members' enclosure at Randwick Racecourse.