Australia's selectors have four Sheffield Shield matches to sort their openers for the Ashes, after the team's top order crumbled under lights in Jamaica.
The tourists went to stumps on night two at Sabina Park at 6-99 in their second innings, leading West Indies by 181 runs but with the game firmly in the balance.
Sam Konstas was out for a duck and his opening partner Usman Khawaja for 14, before Cameron Green offered the only firm resistance with an unbeaten 42 in a chaotic final session.
