Carpenter elected free agency after he was outrighted off the 40-man roster, Chelsea Janes of the Washington Post reports.

EDGE Analysis

Carpenter missed extended time towards the end of the 2015 season with a shoulder injury, but his wealth of experience in the majors will likely lead to a contract from another team during the offseason. He's just two years removed from posting a career-best 1.78 ERA and 0.99 WHIP in 65.2 innings with the Braves.

Carpenter was transferred to the 60-day DL on Tuesday, Mark Zuckerman of CSN reports.

EDGE Analysis

Carpenter has missed more than a month with inflammation in his shoulder, and he recently embarked on a rehab assignment at High-A Potomac. The Nationals haven't provided much in the way of an update on his status, but it's now unclear when, or if, he might make his return to the bullpen this season.

Washington Nationals pitcher David Carpenter will resume his throwing program after an encouraging second opinion regarding his shoulder injury, according to the Washington Post. Carpenter. who was placed on the disabled list July 17, does not yet have a timetable for return.

Washington Nationals pitcher David Carpenter will be shut down for a few days after receiving an anti-inflammatory injection in his shoulder, according to MASN. An MRI on the shoulder revealed no structural damage and Carpenter could resume throwing as early as this weekend.

Washington Nationals pitcher David Carpenter was placed on the 15-day disabled list Friday due to right shoulder inflammation. Carpenter had allowed just one run in six innings over eight appearances since being acquired from the New York Yankees in June.

Carpenter was reinstated from the paternity list Thursday. He will slot back into the middle of the Nationals' bullpen, where he has been very effective this season. Taylor Hill was optioned back to Triple-A as a corresponding move.

Carpenter was placed on the paternity list Monday. Carpenter is eligible to miss up to three days as he and his wife await the birth of their first child. Carpenter has been strong since joining the Nationals from the Yankees, posting a 1.50 ERA in eight appearances. He will be replaced by Sammy Solis until he returns later this week.

Carpenter pitched a perfect inning in his Nationals debut Friday, striking out one. He was brought into the game with the Nats down 8-4 though, so don't expect to see Carpenter in any high-leverage situations any time soon. He's pure fungible bullpen filler.

Carpenter was activated by the Nationals on Friday, Todd Dybas of the Washington Times reports. After placing Aaron Barrett (biceps) on the DL, the Nationals activated Carpenter to add depth to a depleted bullpen. Carpenter was acquired from the Yankees on Thursday in exchange for Tony Renda.

Carpenter was traded to the Nationals in exchange for Tony Renda on Thursday. Carpenter had been designated for assignment earlier this week and since he was not claimed by any teams, his trade value was obviously not high. He had a 4.82 ERA in 22 relief appearances for the Yankees, but his 5.30 K/9 ratio speaks to his lack of late-inning upside.