Australia bowled out the West Indies for 290 in 47.3 overs to the win first ever one-day international in Canberra by 39 runs to take an unassailable 3-0 lead in the five-match series.
Australia took full advantage of the road of a wicket by batting first after Michael Clarke won the toss, and it was Watson that sent a message that he is ready to open for his country again by making a superb 122 from 111 balls with 12 fours and two sixes.
Phil Hughes also made 86 and George Bailey a rapid 44 as Australia put 7-329 on the board.
The West Indies started solidly enough in the run chase even though Chris Gayle didn’t open the batting due to a side strain.
Wicket-keeper Devon Thomas and Kieron Powell put on 54 from just 52 balls before Thomas fell to Australia's one-day player of the year Clint McKay for 19.
When Powell was out for 47 from 49 balls after being caught behind by Matthew Wade off Glenn Maxwell the West Indies were 2-81, but that's when the start of the West Indies' best partnership happened and the tourists looked capable of chasing down the 330 to win.
Brothers Darren and Dwayne Bravo combined for a stand of 114 runs from just 110 balls to have the West Indies 2-195 from 35 overs.
With 135 runs needed from 90 balls and with eight wickets in hand, the West Indies looked more than capable of pulling it off, but then another batting collapse eventuated from there.
Dwayne Bravo fell for 51 from 50 balls to leave the Windies at 3-195, but then Gayle was out for two to continue his disastrous summer with the bat in Australia when he was bowled by Faulkner.
Darren Bravo was still there, though, but not for long as he was also bowled by the left-armer Faulkner for a well-made 86 from 96 balls.
The score was then 5-215 and a procession of wickets continued for the West Indies from there before eventually being bowled all out for 290.
Kieron Pollard made just nine, Ramnaresh Sarwan 12, Darren Sammy eight and Sunil Narine one as the West Indies crumbled. Only Andre Russell offered some resistance in the late overs making 43 from 31 deliveries, but it was to no avail.
Faulkner finished with 4-48 from 8.3 overs for Australia with McKay taking 2-62, Mitchell Starc 1-50, Mitchell Johnson 1-59 and Maxwell 1-44.
Game 4 of the five-match series will take place in Sydney on Friday before the final game on Sunday in Melbourne before a one-off Twenty20 international at the Gabba next Wednesday.