Melbourne: Australia have already stretched the overall lead to 326, but unfazed Indian off-spinner Ravichandran Ashwin said that the team's dressing room atmosphere is positive even though a chase could be tricky on the final day of the third cricket Test at MCG.

Despite the Indian bowlers working hard to improve the visitors' chances of a win, Australia finished Day 4 on 261 for seven with Shaun March (62 no out) and Ryan Harris (8 not out) still fighting on.