Roethlisberger threw briefly early in practice Friday but was in a sweat suit watching by the time practice ended. He will miss a third consecutive game since sustaining a sprained right shoulder and a dislocated rib in a 16-13 win against Kansas City Nov. 12.
The Steelers (6-5) lost each of the first two games Roethlisberger missed, including two weeks ago at home to the rival Ravens (9-2). Batch, 37, then threw three interceptions in a 20-14 loss in Cleveland.
Also ruled out for the Ravens game is linebacker LaMarr Woodley. Guard Willie Colon is listed as questionable, but the Steelers will welcome back receiver Antonio Brown and safety Troy Polamalu. The Pro Bowl standouts practiced all week and are officially listed as probable.