OAKLAND -- By reinstating six players from the 60-day disabled list on Wednesday, the A's were forced to designate right-hander Trystan Magnuson for assignment to make room on the 40-man roster.
In addition to Magnuson, who missed the final two months of the season with right shoulder tendinitis, the A's also reinstated lefties Brett Anderson and Dallas Braden, right-handers Joey Devine and Evan Scribner and first baseman Daric Barton from the DL.
Magnuson made his Major League debut with the A's this year, tallying a 6.14 ERA in nine relief appearances spanning three stints.
Given his season-ending injury, the 26-year-old reliever is likely to clear waivers and return to Triple-A Sacramento's roster.
Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.