Cubs manager Dale Sveum decided to not start Castro for the first time this season and wanted the 22-year-old shortstop to sit near him and bench coach Jamie Quirk in the dugout during the game. They threw some questions at Castro, sort of a pop quiz on defensive positioning.
"I think he was having fun with it and kind of needed that," Sveum said. "A day off is a day off, but it really isn't in the National League, so I told him, make sure you're ready to go somewhere in the sixth inning."
Castro, who will be making his second All-Star appearance with the National League team Tuesday, did get into the game in the seventh in a double-switch, and he has played in all of the Cubs' games this season.
How were his answers?
"They were good," Sveum said. "I can't tell you what the questions were, but he had the right answers to all of them."