Shore signed a minor-league contract Thursday with the Giants.
Shore was released by the Tigers on Thursday, Jason Beck of MLB.com reports.
Shore was added to the Tigers' 60-man player pool Thursday.
Shore (undisclosed) is listed as an available option out of the bullpen for the Tigers in Tuesday's Grapefruit League game against the Mets, Jason Beck of MLB.com reports.
Shore was sent from Oakland to Detroit as a player to be named later Wednesday, completing the Mike Fiers trade.
Shore (lat) has a 0.90 ERA and a 14:1 K:BB in 10 innings pitched since returning from the disabled list with High-A Stockton.
Shore (lat strain) is being held back in extended spring training, MLB.com's Mike Rosenbaum reports.
Shore (trapezius) progressed to playing catch Sunday, Jane Lee of MLB.com reports.
Shore (lat) was shelled in his return from the disabled list with High-A Stockton on Friday, serving up seven runs on eight hits in 1.2 innings pitched.