SEATTLE -- The Erik Bedard injury saga continues for the Seattle Mariners.
Results from the left-hander's MRI exam on Friday revealed, well, there's "something" in his left shoulder causing the discomfort he's been feeling for much of this season.
And that's about all the Mariners know at this point.
"They found some issues in his shoulder," manager Don Wakamatsu said. "We don't know the severity of it yet, but there's something in there that's causing him some discomfort, and they saw it."
Wakamatsu said there is currently no set plan for when Bedard will begin any rehab assignment, and he was only specific enough to say there was some "slight fraying" shown on the MRI.
"I guess right now, we're going to wait and talk to the doctors some more and try to come up with a definitive plan on what we're going to do on his rehab, to determine what he really needs to progress," Wakamatsu said. "So we really don't have all the details yet."
Bedard last pitched on July 25 against Cleveland, and is 5-3 with a 2.82 ERA this season. He was placed on the 15-day disabled list following that outing, his second stint on the DL this year. The last time he was out, the left-hander went a month between starts.
Seattle also optioned left-hander Jason Vargas to Triple-A Tacoma on Friday, selecting right-hander Doug Fister to take Vargas' place on the roster.
Christian Caple is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.