Tateyama was pitching in a game for the first time since Feb. 24. He has been sidelined with back stiffness, but he struck out two while walking one in the third inning.
Both Scheppers and Tateyama pitched for the Rangers in 2012. So did Wilmer Font, but his chances of winning a spot in the bullpen continue to wane because he has been dealing with biceps tendinitis. He threw in the bullpen on Wednesday but time is running short on him.
"I don't think we view on March 6 that anybody is out of time," assistant general manager Thad Levine said. "But there is a sense of urgency that he needs to continue to progress and not have any setbacks."
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.