Heavy rain was threatening the prospects of a decisive result in the second Test between West Indies and Australia at Queen's Park Oval in Trinidad Wednesday. Less than 31 overs were completed by tea on the fourth day when a second torrential storm drenched the ground, forcing the teams to scurry from the field. When play was stopped, Australia was 73 for three in its second innings, leading by 127 runs overall with Ricky Ponting unbeaten on 32 and Michael Clarke not out three. West Indies fast bowler Kemar Roach captured all three wickets to put the brakes on Australia's push for a series-clinching victory. Roach, who bagged five wickets in Australia's first innings, took two wickets in his first over before lunch and collected a third in the shortened second session. Australia polished off the West Indian innings in the first over of the day when left-arm spinner Michael Beer trapped Carlton Baugh lbw for 21. Baugh cut the third ball of the day to the rope for four to move on from his overnight score of 17 but fell to the next ball when he mistimed an attempted sweep and was struck on the pads. Australia made a bright start to its second innings. It put on 26 runs in the first 10 overs after West Indies opened the bowling with Fidel Edwards and spinner Shane Shillingford. Ed Cowan was given a life before he had got off the mark when West Indies captain Darren Sammy dropped a regulation catch at first slip off Edwards but the introduction of Roach into the attack quickly turned things around. In his first over, Roach angled the ball in and found the outside edge of David Warner's bat and Darren Bravo safely held a low catch. Three balls later, Roach knocked out Shane Watson's off stump for a duck, forcing the Australians to adopt a more cautious approach. Roach got rid of Cowan for 20 after lunch when he trapped him lbw plumb in front but was unable to make any more inroads before the foul weather settled in.