"I feel it went really well," he said. "It was nice to get in there and catch someone with pretty serious movement."
Castro, who caught hard-throwing left-hander Xavier Cedeno, would typically catch three bullpen sessions per day early in spring camp, but the Astros are making sure to ease him back to camp.
"I only saw him from a distance, but I talked to everybody and it seemed like he was moving very well," manager Brad Mills said. "We only had him catch one 'pen simply because there's no reason to push him right now until he kind of works into being in catching shape and so forth."