ARLINGTON -- Left-hander Martin Perez threw six scoreless innings for Triple-A Round Rock in a 12-2 victory over Oklahoma City on Monday night and is 4-0 with a 1.13 ERA in his last four starts. But the Rangers are not ready to bring him to the Major Leagues.
"The only conversation we had was he threw the ball well again [Monday] night," manager Ron Washington said. "End of conversation."
The Rangers are staying with Justin Grimm and Nick Tepesch in their rotation for now. Grimm, who is 0-2 with an 11.40 ERA in his last three starts, will pitch again on Wednesday against Oakland. Tepesch allowed six runs in 3 2/3 innings against the Athletics on Monday and is 0-3 with a 5.79 ERA in his last six starts, but he is still scheduled to pitch on Saturday against the Cardinals.
"They just need to start getting more outs deeper in the ballgame," Washington said. "That's what we want them all to do, start executing better."
Tepesch retired nine of the first 10 batters he faced on Monday night before giving up six runs the fourth inning.
"It's about making pitches ... not putting a pitch where you need it to be," Tepesch said. "I have ups and downs during the season, it's all about how fast you can make adjustments. It's all about making pitches."
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.