Murphy has a broken bone in his foot and will begin the season on the injured list, Jen Mueller of ROOT Sports Northwest reports.
The 29-year-old was poised to begin the season as the Mariners' starting catcher, but he fouled a ball off his foot on two separate occasions in summer camp and won't be available for Opening Day. GM Jerry Dipoto said he doesn't believe it will be a significant absence, but Murphy doesn't have an official timeline for his return. Austin Nola is set to take over the starting role in the meantime.