Mariners add IF Rodriguez, OF Langerhans to roster
Seattle made the moves late Wednesday night after its final exhibition game against the Los Angeles Dodgers. The Mariners open the season Friday night at Oakland.
The Mariners also placed starting center fielder Franklin Gutierrez on the 15-day disabled list with stomach gastritis. He's joined on the 15-day DL by closer David Aardsma, who continues to recover from hip surgery, and infielder Matt Mangini, who has a strained right quad. All three moves were retroactive to March 22.
Seattle placed left-hander Mauricio Robles and right-hander Shawn Kelley on the 60-day DL. Each will be eligible to return on May 30.