Castillo will play his first game as a professional Sunday afternoon in Fort Myers, Fla.
• Bogaerts was in a prolonged slump offensively before going on the seven-day disabled list, and Farrell is hopeful the break will do him some good.
"There's been some specific things that he's continued to work on early with [hitting coaches Greg Colbrunn and Victor Rodriguez]," said Farrell. "Taking it from the cage and the early work, and the BP prior to the game into the game has been where maybe the missing link has reared its head. It's still the same talented player that's there, we're just trying to get him back on track and have for quite a while."
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, and follow him on Twitter @IanMBrowne. This story was not subject to the approval of Major League Baseball or its clubs.