Turns out the first-year skipper wasn't making a slight at his 5-foot-10, 210-pound catcher, but Castillo has actually been nursing a sore foot since Wednesday.
"He woke up with a really sore, tender foot to put any pressure on it," Sveum said. "The off-day, he really was struggling. He couldn't really walk on it. Friday it was really, really tender again."
Castillo still played in the first half of Saturday's doubleheader, going 2-for-4 with an RBI, but was left out of Saturday night's lineup as well as Sunday's.
Sveum said Castillo was "a lot better" Sunday, and hopes his 25-year-old catcher will return to action soon.