I actually unlocked this while the game was still installing. Once the install gets to the playable point, you can load up the game and it throws you into a tutorial. You choose your controller settings and start a ball game playing as the Cubs. I played through the game just to kill time while the rest of the game installed in the background and when I finished, pop. Trophy unlocked.
I'll update once I find the actual method, but this is almost guaranteed to be the fastest way to get it considering you don't have to even have the game installed.