Honduras beat Mexico on Wednesday, a result which sends both sides through at the expense of Jamaica. T&T join them in the last six.
Wednesday will see a dramatic finale in CONCACAF as Mexico, Honduras, Jamaica, T&T and Guatemala chase places in the final round.
Costa Rica have already advanced to the final stage of North, Central American and Caribbean qualifying, and they saw off Haiti for their fifth win.
Mexico, Jamaica and Honduras are all still alive with a game to go in Group 2, while El Salvador booked their passage and T&T are nearly there.
While Costa Rica and the USA cool their jets with passage assured, Mexico face a tricky qualifying test in the Great White North in midweek.
The US and Costa Rica both celebrated passage to the final round of qualifying on Saturday, but Mexico were left ruing a Kingston shock.