NESN's Jerry Remy will be out at least another six games recovering from a sinus infection according to the network.
Remy, who has missed the last five games, is now scheduled to return to the booth on May 10.
Dennis Eckersley and Peter Gammons will join Don Orsillo until then with Eckersley doing four games and Gammons two.
Eckersley will be in the booth on Friday for the start of the series against Baltimore. Gammon will then call the games on Saturday and Sunday before Eckersley works the series in Kansas City.