After scoring 122 runs at 40.66 in the 3–0 Test series clean sweep over Pakistan in the United Arab Emirates, Gilchrist went on to help the Australians retain The Ashes 4–1 in 2002–03, playing in all five matches of the series, finishing with 330 runs at 55.50 and taking 25 dismissals as wicket-keeper. After scoring fifties in the first two Tests, Gilchrist scored a counter-attacking 133 from 121 balls in the Fifth Test at the SCG, but was unable to prevent Australia's only loss of the series.