Roy Oswalt will miss his scheduled start Monday with tightness in his lower back. Oswalt will visit a doctor on Monday, but is not expected to land on the disabled list. "Prior to signing Roy he expressed to us what exactly is happening now," Rangers general manager Jon Daniels said. "Sometimes this acts up with his lower back. If it's the same thing he's had in the past, and he expects it is, he believes he'll make his next start. We've got to wait and see, but that's our hope at this point."