In WSC's debut season of 1977–78, Chappell hit the first Supertest century and finished fifth in overall averages. The prevalence of short-pitched fast bowling and a serious injury to Australian David Hookes led to the innovation of batting helmets; Chappell was one of the many batsmen to use one. Following their 1975–76 tour of Australia, the West Indies adopted a four-man fast bowling attack, while the World XI contained fast bowlers of the calibre of Imran Khan, Mike Procter, Garth Le Roux, Clive Rice and Sarfraz Nawaz. The constant diet of pace bowling undermined the confidence of some batsmen during WSC. Chappell's form fell away during the second season and he scored only 181 runs at 25.85 in four Supertests. During the last six days of the season, the WSC Australians lost the finals of both the limited-overs competition (to the West Indies XI) and the Supertest series (to the World XI), thus forfeiting the winner-takes-all prize money. After the latter match, Chappell vented his frustrations on World XI captain Tony Greig by refusing to shake his hand and criticising Greig's inconsequential contribution to his team's victory. The final act of the competition was a series between the WSC Australians and the WSC West Indies played in the Caribbean in the spring of 1979. After the Australians suffered a heavy defeat in the first Supertest at Jamaica, Chappell rallied his team to draw the five match series one-all. His best effort were scores of 61 and 86 at Barbados.