Kieron Pollard smashed 102 off 70 balls on Friday to help West Indies to a 42-run victory over Australia in the fourth one-day international at Beausejour Stadium.
The 24-year-old all-rounder blasted eight sixes and five fours to lift the hosts to 294-7 off 50 overs after his side had been in early peril on 146-5.
Australia stuttered early and although the chase was given late impetus by David Hussey (57) and Brett Lee (57), the visitors were bowled out for 252 off 46.3 overs.
There were two wickets apiece for Andre Russell, Darren Sammy, Dwayne Bravo and Kemar Roach while Sunil Narine was miserly in claiming 1-21 off 10 overs.
The West Indies leads the five-match series 2-1 with the final match at the same venue on Sunday.