What two kickboxing organizations did the brother of Valentin Overeem hold titles in at the same time?
Valentijn Overeem Valentijn Overeem (] ; born 17 August 1976) is a Dutch professional mixed martial artist and kickboxer currently signed with United Glory. A professional competitor since 1996, he has previously fought for the PRIDE Fighting Championships, RINGS, KSW, the World Fighting Alliance, K-1, M-1 Global, Its Showtime, World Victory Road, and Strikeforce. He is the older brother of fellow MMA fighter Alistair Overeem.
Dong Hyun Kim Dong Hyun Kim (Korean: 김동현, 金東炫 ; born November 17, 1981) is a South Korean mixed martial artist currently fighting in the UFC's welterweight division. He was signed by the UFC after fighting in the Japanese promotion DEEP and in the South Korean promotion Spirit MC. As of 9 August, 2017, he is #12 in official UFC welterweight rankings.