Australia triumphed over a never-say-die West Indies on the final day to win the third and final Test by 35 runs at the WACA in Perth.

The West Indies came into the final day requiring 51 more runs for the unlikeliest of victories with numbers 10 and 11 at the crease, but were eventually dismissed for 323.

Kemar Roach began the day on 13 and Gavin Tonge 21 as the mid to lower order of the Windies put them in with a slim chance.

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Roach and Tonge had not given up and had taken 15 runs off Shane Watson and Doug Bollinger in the first 3.2 overs. Bollinger and his team-mates then felt it was all over when Roach was given out caught behind by umpire Billy Bowden.

Roach did not think he hit it and went for the referral, but replays were inconclusive and showed no signs of a nick. The decision stood, though, and Australia won a memorable Test match by 35 runs, and the series 2-0.

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The tourists fought their way back into the contest thanks to an inspired bowling spell late on day three to turn what seemed like being a target in excess of 500 to a much more attainable 359.

That still seemed far-fetched when Travis Dowlin (22), Chris Gayle (21) and Ramnaresh Sarwan (11) were all out by lunch on day four as the West Indies slumped to 68 for three.

It's all about numbers

That was when gutsy pair Narsingh Deonarine and Brendan Nash got stuck in to frustrate the Australians by batting through the entire afternoon session to tea. The pair put on 128 for the fourth wicket to make an impossible victory seem possible.

Deonarine, on Test debut, looked superb in making 82 before being bowled by Watson with the score at 196 for four. Dwayne Bravo then loomed as the last potential match-winner but only managed one before Mitchell Johnson struck in a courageous spell when he was feeling short of 100%.

Top performer: Chris Gayle

Denesh Ramdin got stuck in with Nash to make 14 in a 34-run stand, but when he was bowled by Bollinger it seemed unlikely that the Windies tail would stick with Nash long enough to win.

That seemed even less likely when Nash was out for a marathon 65 off 183 balls in 258 minutes.

Action as it unfolded

Australia then claimed the extra hour but Sulieman Benn made a quickfire 33, and Ravi Rampaul 10 to see the score to 279 for nine before Roach and Tonge came together and took the score along to 308 for nine at stumps.

The day began badly for Australia with Watson being fined 15 percent of his match fee after being charged with bringing the game into disrepute for his aggressive celebration of Gayle's wicket on Saturday.