On June 5th, the ladies of f(x) visited the green campus of Korea University to perform at the half-time show of their "Open Bowl" football playoffs. An Sung Eon, the director of the Korea American Football Association, commented, "Followed by SNSD last year, f(x) has been invited to perform this year to help promote American football. It took a lot of work for us to get this congratulatory stage." Under the support of the Korea American Football Association and the Seoul American Football Association, the league kicked off on May 14th and is in its 18th year this year. Kim Gi Young added, "We hoped that this would not be a festival for the athletes, but something for everyone to watch and enjoy. With American players on the field, we will show that Koreans also have skills that don't pale in comparison." [gallery] Source + Photos: Newsen via Nate