Australia captured three wickets before lunch to put their noses in front in the third Test against West Indies on Friday.
At the interval on the second day, West Indies, replying to Australia's first innings total of 251, were 89 for three with Xavier Marshall not out on 22 and Shivnarine Chanderpaul not out on 19.
Brett Lee removed West Indies captain Chris Gayle and fellow left-handed opener Sewnarine Chattergoon in an energetic opening spell, and Stuart Clark added another key scalp of West Indies vice captain Ramnaresh Sarwan.
Lee has taken two wickets for 26 runs from five overs, and Clark has one for 28 from eight overs.
Lee struck an early blow, when he had Chattergoon caught behind for six nibbling at a delivery that moved slightly away, and then caused further grief, when he had Gayle caught at mid-off for 14 to a spectacular diving catch from Test newcomer Beau Casson.
Australia gained another edge, when Sarwan, a century-maker in the second innings of the drawn second Test in Antigua, sliced a drive and was brilliantly caught by Mike Hussey at gully for 20 to leave the home team on 64 for three.
Australia had earlier been dismissed an hour and 40 minutes before lunch, after they continued from their overnight total of 226 for seven.
The Australians were hoping to extend their innings and to boost their total, but West Indies continued to bowl with purpose and clamped down on the visitors' free scoring.
The tourists suffered an early setback, when Fidel Edwards made the breakthrough, having Casson lbw for 10, and their innings came to a close when the paceman bowled Clark for one.
In between, Australia lost Mitchell Johnson caught at gully for a duck fending away a lifting delivery from Jerome Taylor, who was the pick of the West Indies fast bowlers with three for 46 from 12 overs.
Edwards took three for 55 from 17 overs, and Dwayne Bravo snared three for 61 from 15 overs.
Australia lead the three-Test series 1-0, after they won the opening Test at Sabina Park in Jamaica by 95 runs. The second Test at the Vivian Richards Cricket Ground in the Antigua village of North Sound was drawn.
Australia have already retained the Frank Worrell Trophy - symbol of Test supremacy between the two sides.