Saunders was hit by a line drive in his last start, Friday against the Rays at Tropicana Field. The Rangers have not announced who will replace Saunders in the rotation, but it could be Colby Lewis.
Lewis pitched five innings for Triple-A Round Rock on Sunday, allowing four runs, and threw 92 pitches. He can elect to become a free agent if he is not added to the big league roster by Thursday.
McCutchen is returning to the Rangers after being optioned on Saturday. He pitched 2 1/3 innings on Friday against the Rays in relief of Saunders.
T.R. Sullivan is a reporter for MLB.com Read his blog, Postcards from Elysian Fields and follow him on Twitter @Sullivan_Ranger. This story was not subject to the approval of Major League Baseball or its clubs.