Hit a little Faust with a dust attack while he is floating down. Precise timing is needed. If the little Faust arcs, then it will not end up as a homerun. The little Faust must travel in a straight line. This is done easiest in Training mode. Pause the game, select the character specific settings, and set "What Could This Be?" to "Little Faust". Then, use the move and hit little Faust directly into the opponent to get the "Take Me Out To The Ballgame" achievement.