The Nationals designated Doug Slaten for assignment to make room for new acquisition Adam Kennedy, according to Chico Harlan of the Washington Post (via Twitter). The Nationals picked the 30-year-old Slaten up off waivers from the D'Backs in November.
The lefty pitched just 6.1 innings in the majors last year. He pitched more in 2008, logging 32.1 innings for the D'Backs with 3.9 BB/9 allowed and 5.6 K/9. Slaten added 43.2 Triple A innings last year and his rates were better in the minors. He walked just 3.1 BB/9 with 8.1 K/9 for a 3.09 ERA.