ARLINGTON -- Yoshinori Tateyama was sent to Triple-A Round Rock to make room for Saturday starter Justin Grimm, leaving the Rangers with just six relievers.
"I definitely want to get back to seven relievers as soon as possible," manager Ron Washington said. "When [Josh] Hamilton comes back, we may able to get another one in."
In eight appearances since being called up May 21, Tateyama was 1-0 with an 11.88 ERA, striking out eight and walking three in 8 1/3 innings. Eight of the 13 runs he allowed came during an outing against the Mariners on May 30, when the Rangers suffered their worst loss of the season, 21-8.
"He doesn't hurt himself by walking people," Washington said. "If you want to beat him, you've got to swing the bat. He throws strikes when he takes the ball. We had some unforeseen things happen, so he got optioned."
Grimm, who was 8-3 with a 1.87 ERA at Double-A Frisco, had his contract purchased by the Rangers on Saturday.
"I don't think any player likes being told they're getting optioned or sent down," Washington said. "But he didn't break anything. Everything is in order. He took it like a pro."
Among the other roster moves made official Saturday was Neftali Feliz's move from the 15-day to the 60-day disabled list, retroactive to May 19. Feliz, who is suffering from right elbow inflammation, is eligible to return July 18.
Also, Koji Uehara was officially placed on the 15-day DL with a strained right lat muscle, retroactive to Sunday while Leonys Martin's contract was purchased from Triple-A Round Rock. Martin went 0-for-3 on Friday with a walk while batting ninth and playing center field in his first Major League game this season.
"Martin has the spot Grimm was supposed to have," Washington said. "It's procedure."