I hit it three times after returning my sliders to default. You certainly don't want a lineup full of power hitters. Other than that, it should occur naturally once during your 30 games.
The first time I got it, I chopped a slow roller towards third and the ball went under the third basemans glove and the ball literally slowly rolled and stopped on the base.
I will be away until further notice. Please direct any guide team issues to the other staff.