“It was fun telling him. He was excited about it,” Bell said. “He’s had a lot of success leading up to now. We like the progress he’s made in spring training. We think he’s in a good place to start opening day. We trust any of those four guys.”
The Reds have yet to name a fifth starter to fill in for Wood, who is recovering from pain in his lower back.
Castillo has made four appearances this spring and allowed 12 runs in 7 2/3 innings. He pitched four innings in his last start Sunday against Cleveland, yielding three runs and four hits.