The Astros recalled Blanco from Triple-A Sugar Land ahead of his start Thursday against Seattle.
Blanco was optioned to Triple-A on Sunday, but he'll come right back to the majors to make another start after Framber Valdez's (ankle) start was pushed back to Saturday and Cristian Javier's turn was skipped. Blanco holds a 4.70 ERA and 1.30 WHIP through 23 innings across his last four starts. Jose Altuve (oblique) was placed on the injured list in a corresponding move.