Cap tip to Astros County and the reader who pointed this story out to them, Steve.
According to the Jackson County Floridian, RHP Rodney Quintero has signed with the Astros. Quintero is perhaps the team's most interesting post-20th round pick from this year's draft. According to MLB Bonus Baby's Andy Seiler, the 18-year old can touch 96mph on his fastball, although it sits in the low 90s when he starts. He has some projection left in his frame, too, with the possibility for more velocity in the future.
He's a very raw pitcher, reportedly struggling with command at times and lacking quality secondary offerings. He may wind up in the bullpen, where his potential plus fastball would play up. If the Astros prefer to develop him as a starter, his ceiling could range all the way up to a top of the rotation pitcher, depending on how his secondary stuff and command develops, but his floor in that role is very low.