Diaz (groin) suffered a calf strain recently while running the bases, Martin Gallegos of MLB.com reports.
Diaz has been rehabbing a groin strain and now has a new injury to deal with. He's played just two Cactus League games to this point and can now probably be ruled out for the rest of the spring, with a stint on the injured list to begin the season likely. Once healthy, Diaz is expected to be in the mix primarily at third base and shortstop.