Chappell became South Australian captain when the long-serving Les Favell retired at the start of the 1970–1971 season. His younger brother Greg made his debut in the second Test of the summer against Ray Illingworth's England. Facing an English attack led by the hostile fast bowling of John Snow, Chappell scored a half-century in each of the first two Tests, but failed to capitalise on good starts while Greg Chappell scored 108 in his initial innings. Rain caused the abandonment of the third Test without a ball being bowled. Temporarily promoted to open the batting, Chappell failed in the fourth Test as Australia lost. In the fifth Test at Melbourne, he returned to number three and started nervously. Dropped on 0 and 14, Chappell found form and went on to post his maiden Ashes century (111 from 212 balls), which he followed with scores of 28 and 104 in the sixth Test.