According to mmajunkie.com:
Cheick Kongo has withdrawn from a rumored meeting with Nelson at UFC 116 due to a back injury, according to multiple reports. In his place, the UFC has slotted a surprising replacement: Junior Dos Santos.
Roy “Big Country” Nelson (15-4)
Win Stefan Struve – TKO (Punches) UFC FN 21
Win Brendan Schaub – KO (Punch) TUF 10 Finale
Junior “Cigano” dos Santos (11-1)
Win Gabriel Gonzaga – TKO (Punches) UFC on Versus 1
Win Gilbert Yvel – TKO (Punches) UFC 108
UFC 117 [on August 7th] now includes:
– Anderson Silva vs. Chael Sonnen
– Thiago Alves vs. Jon Fitch
– Junior Dos Santos vs. Roy Nelson
– Ricardo Almeida vs. Matt Hughes
– Tim Boetsch vs. Thiago Silva
– Dennis Hallman vs. Ben Saunders