The Cardinals report that Kyle Lohse has no structural damage in his knee after a Thursday injury sent him off for an MRI.
He is not expected to go on the disabled list. But he may miss a start or two.
Mitchell Boggs is expected to pitch Saturday against the Cubs in the place of injured ace Chris Carpenter who is out two months with a rib cage injury. Brad Thompson, who is 2-0 with Class AAA Memphis after being demoted two weeks ago, may be recalled to fill in for Lohse in the short term.