Australia collapsed to 225 all out in the first innings of their day/night Test against West Indies in Kingston.
The tourists were in a decent position at 157-3 but lost their remaining seven wickets for just 68 runs.
West Indies finished the day on 16-1 to trail by 209 runs, with Mitchell Starc bowling opener Kevlon Anderson for three on his 100th Test appearance.
Steve Smith top-scored with 48 and Cameron Green added 46 for Australia, but their dismissals either side of the dinner break sparking the collapse.
Shamar Joseph was the pick of the West Indies bowlers with 4-33, while Jayden Seales and Justin Greaves took three wickets each.
“Every pitch has been tough. The more balls you spend in the middle you hope it gets better but it just hasn’t been the case,” said all-rounder Green.
“It’s a bit of a grind first time with these balls, but a lot of learnings. Time in the middle is key – just trying to get used to their bowlers, their conditions.”
West Indies faced nine overs at the end of the day, with Starc – just the second Australia pace bowler after Glenn McGrath to play 100 Tests – making the breakthrough as Anderson chopped an inside edge onto his stumps.
Australia already have an unassailable 2-0 lead in the three-Test series after dominant victories in Grenada and Bridgetown.
