Milias went 1-for-3 with two walks and two runs scored in Wednesday's win over the Red Sox.
The 28-year-old remains firmly behind Keibert Ruiz on the catcher depth chart for the Nats, but Milias has been making a contribution of late while starting a couple times a week. Over his last five games dating back to June 16, the 28-year-old has gone 5-for-18 (.278) with a double, an RBI, three runs and a .381 OBP.