Giants backup catcher Tom Murphy was diagnosed with a mid-back herniated disc, the team announced to its beat writers this morning (link via Shayna Rubin of the San Francisco Chronicle).

Tom Murphy’s second stint with the San Francisco ... Of course there’s the Bryce Eldridge of it all, but I’ll be keeping an eye on the first base rotations the next few weeks.

Murphy will receive a second epidural shot this week to address a mid-back disc herniation and will be limited strictly to rehab work for the next two weeks following the injection, Justice delos ...