Martinez went five innings against the Athletics on Wednesday and allowed four runs (two earned) on six hits, three walks and one strikeout.
"He did a heck of a job," manager Ron Washington said. "He really could have come unraveled. They made him work, but he did what he had to do."
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.