Dan LauzonA back injury suffered while training has forced lightweight Dan Lauzon to withdraw from his UFC 103 matchup against Rafaello Oliveira, which was set for the preliminary card of the September 19 event in Dallas.

According to MMA Weekly, which first reported the injury on Monday, Lauzon will soon undergo an MRI to determine the extent of the injury and establish a timeline for his return.

It is not yet known whether the UFC will seek a replacement for the fight, or whether Oliveira will instead be scratched from the 13-bout card and booked to fight at another upcoming event.

Lauzon (12-2) made his UFC debut against Spencer Fisher in late-2006 as the youngest fighter in UFC history, losing via first-round TKO. After suffering another defeat to Deividas Taurosevicius in his next bout, “The Upgrade” has won 8-straight, including a first-round submission of Bobby Green at a January Affliction event.

Oliveira (8-1), a training partner of current UFC lightweight champ BJ Penn, has won three-straight, including a unanimous decision win in his most-recent bout in April, after suffering his only career loss to Lyle Beerbohm at an October ShoXC event.

Rich Franklin vs. Vitor Belfort headlines the UFC 103 pay-per-view card, which also features Junior Dos Santos vs. Mirko “Cro Cop” Filipovic and Martin Kampmann vs. Mike Swick.

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