SCOTTSDALE, Ariz. — When the San Francisco Giants line up on Great American Ballpark’s third-base line on March 27, Tom Murphy likely won’t be among the 26 players in uniform.

Backup catcher Tom Murphy is likely to miss Opening Day for the San Francisco Giants with a herniated disk in his back. Murphy, 33, had been sidelined with an oblique injury since the first week of spring training for which he got a second opinion late last week.

San Francisco Giants backup catcher Tom Murphy is in danger of missing Opening Day with a herniated disc in his back that required an epidural injection.