Sardinas cleared waivers Friday and was assigned to Triple-A Norfolk.
Sardinas was claimed off waivers Wednesday after being released by the Padres, so the Orioles will bring him aboard to provide organizational depth. The 24-year-old hit just .163/.226/.163 while seeing limited playing time with San Diego, but could overtake utility infielder Paul Janish for a roster spot if he can impress in Triple-A.