In Fallas' Notes Column, we see that Chacin is a man who knows what's coming:
think I made good pitches, but they made good swings, and that wind blew the balls out. I battled and tried to mix things up. I'm here to pitch. If they send me down, I'll go down or see if somebody else offers me something.”
If the Astros option him to Triple-A, I imagine he heads to the Hill Country. It's not as though Chacin has dazzled this Spring, and could be an option if injuries mount later in the season.