Giants left-hander Ty Blach will make his first career appearance against Washington in Tuesday's rematch beginning at 7:15 p.m. PT at AT&T Park. Left-handed-hitting Gregor Blanco could get a spot in the Giants' lineup with right-hander Tanner Roark scheduled to pitch for the Nationals. Blanco is batting .345 (10-for-29) when he starts.