The Giants transferred Murphy (knee) from the 15-day injured list to the 60-day IL on Wednesday, Andrew Baggarly of The Athletic reports.
Murphy was given a 4-to-6-week recovery timeline when he landed on the injured list May 5 due to a sprained left knee. However, his move to the 60-day IL will make him ineligible to return until July 4. The Giants signed Curt Casali on Wednesday to fill Murphy's spot on the 40-man roster and provide emergency catcher depth with Patrick Bailey (concussion) also out.