Trevor Chappell few days later [Austin] Robinson, Dennis' manager, rang and said, "Do you want to join World Series Cricket" and I said, "Yeah, where do I sign?"" In 1977–78 Chappell played ten games for WSC Australia in the Country Cup, scoring 339 runs, more than any other Australian batsman, although his average was only 26. A highlight was a 110 he scored against the West Indies in Albury. He also scored 56 off 300 minutes against a World XI in a Lismore game which resulted in him being booed by the crowd for slow scoring. "Trevor Chappell batted exceptionally well and
Trevor Chappell "It keeps you occupied and always in the game." Over the summer of 1969/70 he toured the West Indies with the Australian Schoolboys XI, a team that also included Gary Gilmour, Gary Cosier and Ian Davis. During the tour he came down with chicken pox. He recovered to score 52 against St Kitts. Chappell also played for South Australia in the Australian Schoolboys Cricket Council Championships in Sydney. Chappell debuted for South Australia in the 1972–73 season, replacing Ken Cunningham who had to drop out because of business reasons. He later recalled: When I first got picked for South Australia,