The Twins have agreed to a three-year, $10.3 million contract extension with reliever Glen Perkins. Perkins is now under contract with Minnesota through 2015, with a team option for 2016. "He has been a reliable reliever for us and has helped stabilize the back end of our bullpen in the setup role," general manager Terry Ryan said. "When we were looking for someone to step up last year, it was Glen who seized the opportunity and pitched the way we knew he could."