Viana announced his knee injury on his Instagram account on Friday, and MMAFighting.com confirmed with sources close to the situation that Wilson Reis, who replaced Johny Bedford, is also off the card.
"Unfortunately, I won’t be able to fight at UFN 28 because I injured my left knee on my last jiu-jitsu trainings," Viana wrote. "Thanks God that’s not a bad injury and I’ll started the treatment next week. I hope to return to trainings to be able to fight in a next UFC show in Brazil."
UFC Fight Night 28 takes place in Belo Horizonte, Brazil next Wednesday, and is headlined by Glover Teixeira vs. Ryan Bader.
Check below the complete card of the event:
Glover Teixeira vs. Ryan Bader
Yushin Okami vs. Ronaldo Souza
Joseph Benavidez vs. Jussier da Silva
Francisco Trinaldo vs. Piotr Hallmann
Rafael Natal vs. Tor Troeng
Marcos Vinicius vs. Ali Bagautinov
Felipe Arantes vs. Kevin Souza
Joao Zeferino vs. Elias Silvério
Lucas Martins vs. Ramiro Hernandez Jr.
Keith Wisniewski vs. Ivan Jorge
Yuri Villefort vs. Sean Spencer