The UFC confirmed a initial report from Combate on Tuesday.
After a successful debut at TUF 15 Finale, when he scored a knockout win over Jeremy Larsen, Proctor (8-2) suffered a unanimous decision loss to Ramsey Nijem at UFC on FOX 5 on Dec. 8, 2012. Proctor was expected to face Al Iaquinta at UFC 159, but the bout was scrapped when both fighters sustained injuries.
Marcello (13-5), a Pride veteran and a fellow TUF 15 competitor, looks to get back to the win column after suffering a unanimous decision loss to Kazuki Tokudome at UFC on Fuel TV 8 in Japan. Prior to that bout, Marcello went 1-1 with a win over Reza Madadi and a loss to Sam Sicilia.