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 started off the season with 55 for a Rick McCosker XI against a Ross Edwards XI in a trial game. This ensured his selection in the New South Wales side for the first Sheffield Shield match that summer, meaning Chappell had now played for three states. He was preferred to non-WSC-aligned batter John Dyson, which caused some controversy at the time. Chappell was under pressure to justify his selection but responded with 150 against West Australia, helping New South Wales win. He later scored 144 against Tasmania 76 not out against Queensland and 80 against the touring English. Chappell started