The Steelers will lose starting defensive end Brett Keisel for up to two months with a calf injury and quarterback Ben Roethlisberger will continue to have a sore right shoulder for a while.

Keisel left in the first quarter of Sunday night's game in Cleveland with a right calf injury. Yesterday, he wore a protective boot from his knee to his foot. The injury is similar to one suffered by Dan Kreider in 2001 that kept the former Steelers' fullback from playing for more than two months. Keisel is scheduled for further tests on his calf this week.

Kreider was placed on the physically unable to perform list that July 20 with his injury and did not play in a game until Oct. 14.

NBC-TV reported Sunday night that Roethlisberger has a separated shoulder, described merely as "sore" by coach Mike Tomlin last Tuesday. Indeed, the quarterback has a low-grade separation but it did not prevent him from throwing 19 times, including one pass of at least 60 yards and another of 50 in a swirling wind in Cleveland. He completed 14 of his tosses, one for an 11-yard touchdown to Hines Ward, and finished with a 113.0 passer rating.

Roethlisberger's shoulder injury likely will cause him some discomfort for several weeks.