Estevan Payan and Jordan Mein both have new opponents for UFC on FOX 11 on April 19.
Payan will now face Mike Brown in a featherweight contest, while Mein squares off against Hernani Perpetuo in a welterweight fight in Orlando.
Payan, who has lost his last two fights, was originally scheduled to fight Sean Soriano, but Soriano pulled out with an injury, according to UFC officials Wednesday.
Brown, a former WEC featherweight champion, has won two of his last three fights.
Mein was slated to face Santiago Ponzinibbio, but UFC officials didn't disclose the reason he was pulled from the bout in their announcement Thursday.
Mein is 1-1 during his UFC tenure. He suffered a second-round knockout loss to Matt Brown in a Fight of the Night performance at UFC on FOX 7 this past April.
Perpetuo (17-3), who has won seven straight fights, will be making his UFC debut.
Travis Browne will face Fabricio Werdum in the main event.