Welterweight champion Jorge "Macaco" Patino (27-13-1) has injured his knee, and Lucas Pimenta (8-0) has taken his spot in next week's Legacy Fighting Championship 14 headliner.
He now meets Jeff Rexroad (5-1) for an interim title.
Legacy FC promoter Mick Maynard confirmed the news with MMAjunkie.com (www.mmajunkie.com) overnight. According to Maynard, Patino tore his torn anterior cruciate ligament (ACL). A time table for his return isn't known.
Legacy FC 14 takes place Sept. 14 at Houston's Arena Theater, and the main card airs on AXS TV (formerly HDNet).