Castro is not in the lineup for Tuesday's game against the Royals.
Castro has started and finished all 10 games to open the season, but he's getting a breather Tuesday against lefty Cole Ragans. Mickey Gasper will make the start at second base and bat ninth. Castro is slashing .235/.333/.441 with four doubles, one home run, four RBI, four runs scored and one stolen base across 39 plate appearances in the early going this season.