But if you watched the game, there was plenty of grass to have a larger field.
Not that I can blame A&B, take any advantage you can get over a team like the US. Nearly paid off for them too.
EDIT: It's also where the local USL team plays--speaking of which, I really liked the announcers' commentary about how MLS and the other US leagues have helped all of CONCACAF, not just the US improve in soccer.