Outfielder Brett Carroll, who was designated for assignment April 14, has cleared waivers and been outrighted to Class AAA Syracuse.
The 29-year-old accepted the assignment and will join the Chiefs roster.
Carroll made the Nationals Opening Day roster and was originally expected to see significant playing time in center field, starting against left-handed pitchers. But the late-spring addition of Xavier Nady pushed Carroll out of the mix and he wound up receiving only two at-bats over the season's first week (also making three appearances as a pinch-runner).
When Rick Ankiel was activated off the disabled list April 14, the Nationals needed to clear a roster spot. Carroll was designated for assignment, leaving him in limbo for 10 days while he cleared waivers and while the Nationals sought trade requests.