WBC stupid rules forced this as their tie breakers are run differential. In a normal game Canada shouldn't/wouldn't bunt and Mexico probably didn't realize the rules. Also Canada was left out of the 2006 WBC semis due to run differential so that's where their mind set to bunt.
Not surprising, the crowd at the game, in Arizona, was pro-Mexico. I wonder how many illegals were able to get tickets to the game? They should thank Washington for their opportunity to riot today.