Johnson has been sidelined since May 26 with back spasms. He started in center field and struck out swinging in his first at-bat leading off and grounded out in the third.
Baker, out since May 29 with a strained left groin, started at second base and grounded out in the first and popped up in the fourth before play was stopped.
Both players had contributed off the bench this season before they were hurt. They were expected to be joined on Sunday by Alfonso Soriano, who has been rehabbing a strained left quad in Mesa, Ariz.