Although Callaspo made progress with an irritation in his right side in the last week, manager Trey Hillman held him out of the Opening Day lineup and started Willie Bloomquist at third instead.
"Callaspo's good," Hillman said Monday. "Which encourages me that for Game 2, he may be in there. But I still feel comfortable with the decision we made to hold off another 24 to 48 hours. I'll feel better about it."
The injury kept the switch-hitting Callaspo from batting left-handed for a few days but he's returned to that. However, Hillman opted to keep him out of Monday's lineup against Tigers right-hander Justin Verlander.
Callaspo will have Tuesday's open date to further recuperate. Hillman plans to have Callaspo bat third upon his return.
One Royals player who won't be resting on Tuesday is pitcher Gil Meche. He's scheduled to throw 80 to 90 pitches against a team in extended spring camp at Surprise, Ariz. If all goes well, it's possible that he'll come off the disabled list (shoulder bursitis) to pitch on Sunday against the Boston Red Sox.