Australia are surging towards a Frank Worrell Trophy clean sweep after setting the West Indies a fourth-innings target of 497 with six-and-a-half sessions to play in the second Test in Adelaide.
On another dominant day for the hosts, Australia took six wickets in the first session to have the tourists all out for 214 before opting against enforcing the follow-on.
They then went hard in the search of runs, hitting 6-199 from 31 overs in a frantic third innings before declaring and asking the Windies to pull off a record chase to draw the series 1-1.
Steve Smith's decision to send the West Indies in under lights also means that if the match extends far enough, Australia will also get their second new ball in the twilight on night four.
Even for all the fast scoring and Travis Head finishing unbeaten 38 from 27 balls, the Australian batters left runs out on the ground.
David Warner got another start before again dragging a ball onto his stumps on 28, before Usman Khawaja was caught behind in the same Roston Chase (2-25) over for 45.
Smith hit 35 and at one stage swept Kraigg Brathwaite for six, before Labuschagne twice reverse-hit the spinner for four later in the same over during his 23-ball 31.
But both fell either side of tea, as the decision to slog their way through the innings raised questions from former skipper Ricky Ponting during commentary on the Seven Network.
Ponting was especially concerned that Cameron Green's dismissal slogging Alzarri Joseph (3-33) on five could serve to dent his confidence after a tough outing in the first innings.
In terms of this match though, the wickets seemed irrelevant after Nathan Lyon's bowling and the West Indies' calamitous running between the wickets had given Australia a 297-run first-innings lead.
Lyon picked up two lbws on Saturday afternoon to take his figures for the innings to 3-57, after overtaking Shane Warne the previous night night as the leading wicket-taker at the Adelaide Oval.
The West Indies were also their own worst enemy as they lost two wickets before a run was added on Saturday afternoon.
Tagenarine Chanderpaul (47) was run out on the fourth ball of the day, when he prodded into space, took off, turned around and was caught short by a Starc direct hit.
That came in a mix-up with nightwatchman Anderson Phillip (43), who was the Windies' second top-scorer after taking the long-handle to Lyon.
But he too was run out when he hit a ball through cover, hesitated, then tried to run on a misfield and was instead turned back and caught short of his ground.
It was the kind of moment that summed up the Windies' two-month tour, which began in Twenty20 disappointment, included a World Cup exit in the preliminary stage and now looks like finishing with a 2-0 Frank Worrell Trophy defeat.