Stewart (shoulder) started throwing in mid-November, but the Twins are unsure if he will be ready for the start of spring training, the Minneapolis Star Tribune reports.

Stewart (shoulder) and the Twins agreed to a one-year, $870,000 contract Friday to avoid arbitration, Aaron Gleeman of The Athletic reports.

Stewart will undergo arthroscopic right shoulder surgery on Tuesday and is expected to be sidelined for 5-to-6 months, Do-Hyoung Park of MLB.com reports.

The Twins placed Stewart on the 15-day injured list Wednesday with a right shoulder strain, Betsy Helfand of the St. Paul Pioneer Press reports.

Stewart will be placed on the injured list, TwinsRadio reports. He's expected to played on the injured list Wednesday, Betsy Helfand of the St. Paul Pioneer Press reports.

The Twins activated Stewart (shoulder) from the 60-day injured list Wednesday, Do-Hyoung Park of MLB.com reports.

Stewart (shoulder) has given up one run in three innings at Triple-A St. Paul with five strikeouts and two walks during a rehab assignment. He'll make at least one more appearance before being activated from the injured list next week, The Athletic reports.

Stewart (shoulder) will begin a rehab assignment with Triple-A St. Paul on Tuesday, Darren Wolfson of Channel 5 Saint Paul reports.

The Twins transferred Stewart (shoulder) to the 60-day injured list Wednesday.

Stewart (shoulder) will throw two live batting practice sessions this week, Bobby Nightengale of the Minneapolis Star Tribune reports.