Alejandro Perez, who won the bantamweight title on The Ultimate Fighter: Latin America, will return to Mexico City for his second Octagon appearance.
Perez will meet Patrick Williams at UFC 188 this June. A lightweight contest between Johnny Case and Frank Trevino was also added to the card that features Cain Velasquez and Fabricio Werdum unifying the heavyweight titles.
Back in late 2014, Perez (15-5) defeated Jose Alberto Quinonez via decision to win TUF, while Williams (7-4) lost his Octagon debut to Chris Beal.
Case (20-4) has picked up two straight finishes since signing with the UFC, defeating Frankie Perez and Kazuki Tokudome. Trevino (12-0) and Case were originally scheduled to meet, but an injury knocked the Mexico City-native out.
Below is the current lineup:
MAIN CARD (PPV/10 p.m. ET)
Unified UFC Heavyweight Championship
Cain Velasquez (c) vs. Fabricio Werdum (ic)
Lightweight: Gilbert Melendez vs. Eddie Alvarez
Welterweight: Augusto Montano vs. Cathal Pendred
Female Strawweight: Tecia Torres vs. Angela Hill
Featherweight: Yair Rodriguez vs. Charles Rosa
Middleweight: Kelvin Gastelum vs. Nate Marquardt
PRELIMINARY CARD (FOX Sports 1/8 p.m. ET)
Bantamweight: Alejandro Perez vs. Patrick Williams
Lightweight: Johnny Case vs. Frank Trevino