Due to an injury, Marcos Vinicius has been forced to withdraw from his bout with Yuri Alacantara scheduled for UFC on FX 8 on May 18.

UFC officials still have not yet confirmed a replacement opponent or the injury that caused the withdrawal.

Vinicius is 4-1 in his last five fights but is most recently coming off a knockout loss to Johnny Bedford at The Ultimate Fighter 16 Finale. Vinicius, was a cast member on the first season of The Ultimate Fighter: Brazil.

Alcantara is 3-1-1 in his last five fights including a knockout victory over surging featherweight prospect Ricardo Lamas. He is most recently coming off a controversial no contest when he supposivedly delivered punches to the back of the head of Pedro Nobre at UFC on FX: Belfort vs. Bisping.

UFC on FX 8 will be headlined by Vitor Belfort, who will be clashing with former Strikeforce middleweight champion Luke Rockhold.

Updates will be added as soon a replacement opponent is confirmed.