Four more bouts are added to UFC on FX 1. Eric "Red" Schafer takes on Jorge "El Conquistador" Rivera, Mike Brown to fight Vagner Rocha, Reza Madadi vs. Rafaello Oliveira and Ryan Jimmo to fight Karlos Vemola according to ufc.com.

"Verbal agreements are in for a middleweight match in Nashville on January 20 as Eric "Red" Schafer takes on Jorge "El Conquistador" Rivera" Dana White, UFC president, said.

Schafer (12-6-2) will look for his first UFC win of 2012 when he fights Rivera. Schafer is a veteran of eight UFC bouts, going 3-5 with the UFC. Schafer last fought at UFC 136 against Aaron Simpson, losing via unanimous decision. Schafer will definitely need to secure a win if he hopes to stay in the UFC, his sole victory in his past four fights was at XFO 41 where he submitted Chris Albandia.

Rivera (18-9) looks to be holding off his retirement for the time being, having flirted with the idea after dropping his last two fights to Michael Bisping and Constantinos Philippou. A loss for Rivera could very well end his career.

A featherweight bout pitting former WEC featherweight champion, Mike Brown, against Vagner Rocha has also been added to the card.

Brown (25-8) will look to build upon his UFC 133 unanimous decision win over Nam Phan at UFC on FX 1. That win also snapped a two fight losing streak for the former champ.

Rocha (7-2) last fought at UFC Fight Night: Shields vs. Ellenberger, submitting Cody McKenzie via rear naked choke in the second round. Rocha is now 2-2 over his last four fights.

Another bout includes Sweden's Madadi (11-2) who makes his UFC debut on the heels of a six fight win streak that includes wins over former UFC fighters in Rich Clementi and Junie Browning. Opposing him is Oliveira (14-5) who needs a win to prevent a three fight skid and the possibility of being ousted from the UFC, defeated by Yves Edwards in his last fight at UFC Live: Cruz vs. Johnson.

Rounding out the new additions to UFC on FX 1 is a light heavyweight bout between UFC debuting Jimmo (16-1), last defeating Rameau Thierry Sokoudjou at MFC 31, fighting Vemola (8-2). Vemola's last bout was a unanimous decision loss to Ronny Markes at UFC Live: Hardy vs. Lytle.

UFC on FX 1 is set for January 20, 2012 at the Bridgestone Arena in Nashville, Tennessee.