"I haven't started in awhile, so it's better to be safe than sorry," Mikolas said. "So we're going to tap the brakes a little bit. I'm a little more tired than normal. Nobody likes their arm not feeling 100 percent. This is the first time starting in five years and my body is adjusting. Let it catch up, settle down and be ready to go in my next start."
The Rangers haven't decided when that will be. Nick Martinez starts on Sunday against the Astros and then Colby Lewis, Derek Holland and Nick Tepesch are scheduled to pitch against the Royals during the three-game series that starts on Monday in Kansas City.
The earliest Mikolas would pitch is Thursday against the Mariners in Arlington. But the Rangers could also use Scott Baker, who has won two straight starts. He allowed two runs in 6 1/3 innings on Friday night against the Astros.
"We'll see," manager Ron Washington said. "Baker isn't going to be available for three days so we'll wait and see after that."
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.