This after beating Puerto Rico 2 nil on Thursday (Nov 9) at the Jn Mona Hockey Field.
The result that saw them remain atop the standings with nine points.
The Jamaicans had earlier secured wins over Guatemala and panama respectively before playing to a nil-all draw with Guyana yesterday.
The Jamaican ladies will face Bermuda in their final preliminary game on Saturday at 12 noon.
The two finalists will qualify for the CAC Games next year in Colombia.