Royal Arena 1 was a mixed martial arts event held  on March 10, 2012 at Broendby Hallen in Copenhagen, Denmark. The main card was broadcasted live on TV 2 Sport & the undercard streamed on the website of the Danish tabloid newspaper, Ekstra Bladet.  It featured two middleweight tounament bouts: Mikkel Parlo vs. Marcin Tondryk & Nic Osei vs. Simon Carlsen. A highly anticipated welterweight match between Nicolas Dalby & Mikkel Guldbæk was cancelled due to a knee injury sustained by Guldbæk during training. Dalby instead faced Spanish top prospect Acoidan Duque.