Well, it appears Nelson Cruz's tight hamstring may have cost Rich Harden his roster spot...
Per the S-T, the Rangers have put Harden on the d.l., and are recalling Brandon Boggs from AAA. Boggs will be outfield insurance for the Rangers while they wait and see what happens with Cruz's hamstring.
This means that Pedro Strop, who was expected to be sent down today to make room for Boggs, lives for another day. He could be sent down to make room for Derek Holland, should the Rangers decide to put Holland in the rotation, or he could stick if Scott Feldman makes Harden's scheduled start on Tuesday.