Meantime, first baseman Eric Hosmer batted sixth as he tries to dig out of his season-long bumpy ride. Hosmer sat out Sunday's I-70 Series finale after batting fourth in the previous two games against the Cardinals.
This was just third time for Moustakas in the three-hole.
"We think he's going to be a middle-of-the-order lineup hitter," manager Ned Yost said. "We think Hoz is more likely to be a three and Moose a four, but right now that's what fits best for our team and our lineup, and we'll leave him there for a little bit."