There are a couple of Astros minor league players who might be selected in the rule 5 draft today.
Brandon Bailey is the most likely to be taken. Orioles are in need of starting pitching and he might be an option for them.
Other players that might be targeted include:
RHP Yohan Ramirez
RHP Andre Scrubb
OF Ronnie Dawson
SS/3B Jonathan Arauz
Pitchers are more likely to be taken than fielders but then again, that is how the Astros got Marwin G.