Grandal is dealing with plantar fasciitis in his foot, Jason Mackey of the Pittsburgh Post-Gazette reports.
Grandal hasn't caught a spring training game since the end of February due to his foot, but manager Derek Shelton said he expects Grandal to resume playing in games soon. The 35-year-old will operate as Pittsburgh's starting catcher during the regular season, but Shelton has stated that Grandal's workload will be limited due to his age.