Costa Rica didn't look great at the CONCACAF U-20 Championship and hasn't looked great at the 2017 Men's U-20 World Cup either. Conversely, Zambia is the 2017 AFCON U-20 champion and has been playing like a champion in its opening games of this tournament.
For Costa Rica to have a chance in this match, one feels it not only needs to play better, but Zambia needs to start playing a lot worse. It seems an unlikely combination of events.
Still, Los Ticos can hope that the Zambia of the first 50 minutes or so of the team's game against Iran is the one that turns up for this game.