Put into bat, Trinidad and Tobago could score a modest 135 for nine with captain Denesh Ramdin (48) being the only substantial contributor but their bowlers bowled Brisbane out for 110 in 18.4 overs at the JSCA Stadium here.
Rampaul, who was coming back after recovering from an ankle injury, played the pivotal role, claiming four important wickets while conceding just 14 runs in his spell.
For Brisbane, who struggled for runs from the very beginning of their run chase, opener Joe Burns was the lone main contributor with a 43-ball 45. They were still in with a chance to chase sown the target of 136 when they reached 76 for three in the 14th over but suffered a batting collapse later on.
They could add just 34 runs at the expense of seven wickets in 5.2 overs to be all out for 110 and lose the match.
The biggest partnership for Brisbane was the 45 for the third wicket between Burns and Daniel Christian (13). But with the T&T bowlers tightening the screws with a disciplined effort, the inexperienced Brisbane batting line-up crumbled with just four of them reaching double digit figures.
Both the sides have come here with a depleted squad as some of their key players either pulled out or playing for other teams in the tournament.