Steve Lyons will fill in for Remy in Toronto. Hall of Famer Dennis Eckersley will also fill in while Remy is on medical leave.
"Obviously thoughts and prayers for Jerry," Red Sox manager Alex Cora said. "I just texted him. God is in control. He will be back sooner rather than later. We will miss him for now, but we know he will be fine and is going to be back with us."