Nationals activate RHP David Carpenter, place RHP Aaron Barrett on DL

The Washington Nationals activated newly-acquired right-hander David Carpenter on Friday and placed right-handed pitcher Aaron Barrett on the 15-day disabled list with a right bicep strain. President of Baseball Operations and General Manager Mike Rizzo made the announcement.

The Nationals will be Carpenter's fifth stop as the veteran right-hander comes to D.C. after Houston, Toronto, Atlanta and New York. Acquired from the Yankees on Thursday in exchange for Minor League infielder Tony Renda, the 29-year-old reliever has appeared in 210 games over the past four-plus seasons, working to an 11-11 record with a 3.73 ERA.

His familiarity within the division is obvious, given his time with the Braves from 2013-2014. Carpenter was 10-5 with a 2.63 ERA in two seasons (121 games) with the Braves. During his time in Atlanta, Carpenter posted a 10.0 strikeouts-per-nine-innings mark. Over the course of his career (885 batters), Carpenter has worked to a 26.2 percent swing-and-miss rate.

Carpenter appeared in 22 games for New York this season (18.2 IP) and posted a 4.82 ERA. He was designated for assignment by the Yankees on June 3.

Barrett, 27, is 3-2 with a 4.64 ERA in 30 games (21.1 IP) for the Nationals this season. The right-hander is tied for 14th among National League relievers with 11.81 strikeouts per nine innings. He was removed from Thursday night's game in the middle of the eighth inning with the injury.