Weiss (shoulder) still has not progressed to pitching on a mound, the Minneapolis Star Tribune reports.
The Twins transferred Weiss (shoulder) to the 60-day injured list Tuesday.
The Twins placed Weiss (shoulder) on the 15-day injured list Thursday.
Weiss (shoulder) will begin the season on the injured list, Betsy Helfand of the St. Paul Pioneer Press reports.
Weiss is currently sidelined with a tres major strain in his right shoulder, the Minneapolis Star Tribune reports.
The Twins claimed Weiss off waivers from the Red Sox on Wednesday, Dan Hayes of The Athletic reports.
Weiss was designated for assignment by the Red Sox on Wednesday, Chris Cotillo of The Springfield Republican reports.
The Red Sox optioned Weiss to Triple-A Worcester on Saturday, Gabrielle Starr of the Boston Herald reports.
Weiss was recalled from Triple-A Worcester on Saturday.
Boston claimed Weiss off waivers from the Angels on Friday and optioned him to Triple-A Worcester.