The popular SBS entertainment program "I like Sundays - Running Man" guests Lee Gook Joo and Hong Jin Young fought while playing a game. On the most recent episode of the SBS entertainment program "I like Sundays - Running Man," which aired on July 20, 2014, Running Man members and guests (singer Baek Ji Young, comedienne Hong Jin Young, Fei of the girl group Miss A, comedienne Lee Gook Joo, and model Kang Seung Hyun) played games. On this day's episode, Hong Jin Young played a game of arm wrestle with Kang Seung Hyun. Hong Jin Young was confident that she would win, but she lost to Kang Seung Hyun soon after the game started. Lee Gook Joo made a snarky comment on her loss, making fun of Hong Jin Young. Hong Jin Young angrily attacked Lee Gook Joo, and the fight started. They had a catfight, making the other players laugh. At the end, Hong Jin Young fell onto the floor, and Lee Gook Joo, catching her breath, warned her, making the players laugh once more. In related news, the SBS entertainment program "I like Sundays - Running Man" shows Running Man members, Song Ji Hyo, Gary, Kim Jong Gook, Ji Suk Jin and Lee Kwang Soo, and guests playing game. The episode airs every Sunday night.