A fancam video of SNSD’s recent performance in Hiroshima went viral because Taeyeon accidentally hit a fan with a baseball. As a part of the show, the girls started throwing baseballs out to fans. The video starts off with Taeyeon throwing baseballs into the crowd, when suddenly she stops with an embarrassed look on her face and quickly scurries away. When the rest of the members go back to her, she explains what happens and apologizes to the fan.
My question is, why were they throwing baseballs into the crowd?