Charlton covered a diverse range of major sports events. His commentary was described by sports journalist Martin Flanagan as "slightly ornate" but with "sincerity [that] compelled attention", and delivered with "elegant diction". He was involved in commentary for 5 Olympic Games and 2 Commonwealth Games. His many years of tennis broadcasts included numerous Davis Cup tournaments and Rod Laver's attainment of his second Grand Slam in the 1969 U.S. Open final. In motor sport, he covered Jack Brabham's Formula One World Championship win at the 1966 French Grand Prix. In association with "The Age" he promoted major golf tournaments over 13 years including the Australian Open, the Australian PGA Championship and the Victorian Open.