Jake Ellenberger has agreed to replace the injured Brian Foster and fight Sean Pierson on short notice at UFC 129 in Toronto a week from Saturday.  The UFC announced the switch late yesterday.  Ellenberger most recently took a razor-thin split decision over the unheralded Carlos Eduardo Rocha at UFC 126, and is likely looking to put himself in the good graces of the UFC brass by taking a short-notice fight.  Pierson, meanwhile, who recently quit his job as a police offer in Toronto to become a full-time fighter, will look to establish himself in the UFC's welterweight division against a tough veteran in Ellenberger.

Jake Ellenberger (24-5)
Win Carlos Eduardo Rocha - split decision - UFC 126
Win John Howard - TKO (doctor stoppage) - UFC on Versus 2
Win Mike Pyle - TKO (punches) - UFC 108

Sean Pierson (11-4)
Win Matt Riddle - unanimous decision - UFC 124
Win Ricky Goodall - TKO (punches) - W1 New Ground
Win Fabio Holanda - KO (punches) - Wreck MMA Fight for the Troops