The hyped Australia-India Test series was a commercial success but it was a bittersweet feeling for smaller cricket nations unable to regularly play the expensive format.

India's 3-1 defeat in Australia exposed the fragility of their top order, but equally unmissable was how much they rely on pace spearhead Jasprit Bumrah, who gave it all until he broke down in the series finale in Sydney.

Australia race to victory on day three of the Fifth Test in Sydney with Scott Boland taking 6-45 to help regain the Border-Gavaskar Trophy.

Indian cricket fans and pundits heaped praise on stand-in skipper Jasprit Bumrah on Sunday, but questioned the future of several veteran players after their team lost 3-1 to Australia in a gripping five-Test series.

Australia skipper Pat Cummins spoke of his pride in his team after they rebounded from losing the opening test against India to clinch the series 3-1 on Sunday and win the Border-Gavaskar Trophy for the first time in a decade.

Tough decisions might need to be made for India's slumping Test cricket team in desperate need of a reboot after falling away in Australia.