Griffin (elbow) threw a 30-pitch side session Tuesday consisting of fastballs and changeups, and also tossed 10 breaking balls with the catcher moved up, Susan Slusser of the San Francisco Chronicle reports. Slowly but surely, Griffin is building strength in his surgically-repaired right arm. Griffin was still restricted to throwing his breaking balls on flat ground early in March, so Tuesday's session marks another step in his progression. He is still less than 11 months removed from Tommy John surgery.