The Marlins activated Norby (quadriceps) from the 10-day injured list Monday.
Norby will rejoin the Marlins after missing the minimum 10 days while recovering from a left quad strain. The 25-year-old was activated after completing a three-game rehab assignment at Triple-A Jacksonville, during which he went 2-for-10 with two RBI, a run scored and four strikeouts. Norby is expected to settle back in as Miami's primary third baseman for the final two weeks of the season.