With Dan Lauzon sidelined because of a back injury sustained in training, Nik Lentz has agreed to step in and replace him against Rafaello Oliveira at UFC 103: "Franklin vs. Belfort" from the American Airlines Center in Dallas, Texas, on Sept. 19, according to Sherdog.com.

Lentz is on a seven-fight win streak that dates back more than two years. He is a Minnesota Martial Arts Academy product who has competed primarily on the local circuit for most of his career.

"The Carnie" recently scored a unanimous decision win over UFC veteran Drew Fickett at SNMMA: "Beatdown at 4 Bears" and stopped Nick Walker via technical knockout (punches) in his last outing at EC 127: "Extreme Challenge 127" in May.

Oliveira has won three straight since the semi-impressive loss to "Fancy Pants," including two stints on XFC cards. Like Lauzon, he is also an aggressive fighter with a strong rate of finishing fights, having stopped 75 percent of his opponents before the final bell.

Both Lentz and Oliveira will be making their promotional debuts on Sept. 19.

UFC 103 will feature a main event between Rich "Ace" Franklin and Vitor "The Phenom" Belfort at a 195-pound catchweight. Also slated for the main card is a heavyweight tilt between former PRIDE superstar Mirko Cro Cop and surging heavyweight prospect Junior Dos Santos.

In addition, Martin Kampmann and Mike Swick will collide to determine the number one contender for Georges St. Pierre’s 170-pound title.

For the latest UFC 103 fight card click here.