A second half goal for Pumas lifted the Mexican club's youth team past the Philadelphia Union Academy in the second match of Generation adidas Cup group play on Sunday.
The 1-0 loss combined with a 1-0 win for Pumas over Colorado Rapids in the other Group C match on Sunday eliminated the Union from the Premier Division competition of the U17 tournament.
The Union will face group leader FC Tokyo in the final match on Tuesday at 11 a.m. The Union have one point after two matches, the Rapids two, Pumas four, and FC Tokyo five.