 they have to score more points so if panama draws the u.s has to win if panama loses they just the u.s has to not lose feeling that if they if panama gets more points the u.s is out if they are tied on points if say both panama and the u.s win then the u.s has to make sure they are still ahead on goal differential right now it is plus one for the u.s minus one for panama so that's a two goal differential so panama