Davis was outrighted to Triple-A Syracuse on Wednesday.
He was designated for assignment last week, but will receive an invite to spring training this year. The 29-year-old notched a 2.65 ERA with 34 strikeouts in 34 innings at Double-A last year, but he was the victim of some bad luck at Triple-A, posting an 8.49 ERA compared to a 3.59 FIP. Look for him to battle for a spot at the front of the Nationals bullpen, but more likely get assigned to Triple-A at the end of spring training.