Tejeda was in the running for a starting job in Spring Training but manager Trey Hillman said on Saturday that he's slotted again for relief.
"We're looking more at Robby staying in a bullpen role because of his versatility to make sure we have as much inventory and as many options as possible if we have other potential problems in the rotation," Hillman said.
"I'm not going to say it's not something that we couldn't do because you can amp him a little more. He's got a very resilient arm as we've seen the last two years but we're thinking more, as it sits today, at a bullpen slot rather than a rotation slot."
Tejeda has pitched in five games, posting a 7.84 ERA over 10 1/3 innings. He got his rotation shot after filling in as a starter last September; he made six starts with a 3-1 record, 2.84 ERA and 32 strikeouts and 20 walks in 31 2/3 innings.
Fellow reliever Kyle Farnsworth stepped ahead of Tejeda in the Royals' evaluation and could be a rotation alternative if Gil Meche's shoulder becomes a problem.
At the moment, the rotation shapes up as Zack Greinke, Meche, Luke Hochevar, Brian Bannister and Kyle Davies. But Hillman has not made that official.
Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.