Weeks was activated by the Red Sox and will be available off the bench Sunday against the Rays, MLB.com reports. Acquired from the Orioles on Saturday in exchange for Kelly Johnson and Michael Almanzar, Weeks will join the big league roster immediately after spending most of the campaign at Triple-A Norfolk. The 27-year-old should give the Red Sox an infusion of speed off the bench, but his inability to play multiple positions will likely limit his at-bats, since Dustin Pedroia (concussion) and Brock Holt rank 1-2 on Boston's depth chart at second base.