Jason Bergmann, who was designated for assignment by the Nationals on April 15, has cleared waivers and been outrighted to Class AAA Syracuse.
The right-hander was 0-1 with a 15.43 ERA in four games and was removed from the 40-man roster when the Nats needed to clear space for left-hander Scott Olsen.
Bergmann, who has pitched in at least one game each of the Nationals' six seasons, expressed his desire to remain with the organization. Another club, however, could have claimed him off waivers or acquired him via trade over the last week.
The Nationals also could have released the 28-year-old once he cleared, but general manager Mike Rizzo said last week he had no intention of doing that.