Mejia (shoulder) was activated from the 10-day injured list Friday, Marc Topkin of the Tampa Bay Times reports.
Mejia made one rehab appearance with the Rays' rookie-level Florida Complex League affiliate this week and has been cleared to rejoin the big-league roster after spending the 10-day minimum on the shelf. The 26-year-old should step in as Tampa Bay's primary backstop since Mike Zunino (shoulder) is out for the year.