That is the most complicated scenario as it would provide four teams with the same W-L record The current situation between those teams on points scored for and against is as follows:
PUR +22 -3 = +19 CAN -8 +7 = -1 URU -7 +3 = -4 BRA -22 +8 = -14
According to this Puerto Rico is qualified, and Brazil has no chance to qualify, regardless of the results of tonight’s games. Canada can only qualify if Uruguay and Puerto Rico win with not more than 1 point Uruguay can qualify if they win against Brazil with more than 2 points