Sources close to the fighter have informed FiveKnuckles.com that Minnesota Mixed Martial Arts trained Nik Lentz will step in for the injured Dan Lauzon against Rafaello Oliveira at UFC 103. The event is scheduled for Sept. 19 in Dallas, TX.

Lauzon, who is coming off an 8-fight win streak, was forced off the card after injuring his back during training. No word on a time table for his recovery. Both he and Oliveira's contracts were picked up by the UFC following the demise of Affliction's MMA fight promotion operations.

Lentz, 23, wrestled collegiately at the University of Minnesota and was a 2-time Minnesota state wrestling champion. He's put together a 16-3-1 MMA record in his young mixed martial arts career, earning notable wins over Drew Fickett and Dan Loman. He takes a 6-fight win streak and a very prestigious corner with him into his octagon debut.

Oliveira (9-1) is coming off of a win over John Mahlow at XFC 8: Regional Conflict back in April and currently trains with UFC lightweight champion BJ Penn. He's known amongst MMA insiders as a prospect to watch with his mix of heavy hands and high level Brazilian jiu-jitsu. The Brazilain native has only one blemish on his mixed martial arts ledger; a controversial doctor's stoppage loss to Lyle Beerbohm at an EliteXC event last year. Oliveira dominated the first round of action but wasn't allowed to continue due to a cut he suffered toward the end of the round; giving Beerhohm the win.

Make sure to check back with us the day of the event for free, live, round-by-round coverage of UFC 103 right here at FiveKnuckles.com! Join expert analyst Mike Williams as he takes you through the entire fight card blow-by-blow and then keep it right here for all the post-fight news and notes you can handle!