She's friends with Kang Jung Ho, one of the team's infielders. He asked her to come throw the first pitch at their game on September 13th with the Milwaukee Brewers at the PNC Park.
Hyomin said, "I'm honored to take part in such a place and I'll do my best not to be a bother." She'll be leaving Korea at 10:40 AM on September 11th for the pitch. Good luck, Hyomin!