Veteran fighter Aaron Riley is hanging up the gloves.

Riley, who was defeated by Justin Salas this past weekend at UFC on FOX 8, announced his retirement following the defeat.

“Fight my last MMA fight (Saturday),” he posted on Twitter. “It’s been fun but after 16 years I’m calling it good. Thanks to everyone who ever supported my career.”

Riley began competing professional as a 16-year-old, racking up a 30-14-1 career record. He lost three of his last four, but spent a good portion of the past three years on the sidelines recovering from injuries.

Some of Riley’s notable fights came against Ross Pearson, Eddie Alvarez, Jorge Gurgel, Chris Lytle, Robbie Lawler and Yves Edwards.