DALLAS -- The Nationals made their first trade of the offseason on Friday, acquiring reliever Ryan Perry from the Tigers in exchange for right-hander Collin Balester.
Perry became expendable after the Tigers signed free agent Octavio Dotel during the Winter Meetings. Perry is a pitcher who has a power arm. His fastball is clocked as high as 99 mph. He also has a power slider.
Perry, who has a Minor League option left, could make the Nationals' big league roster as a sixth or seventh inning reliever before Tyler Clippard and Drew Storen enter the game.
"Big upside," Nationals general manager Mike Rizzo said via text message about Perry.
Perry, who will be 25 next season, joins the Nationals after going 5-6 with two saves and a 4.07 ERA in 149 relief appearances spanning three seasons with Detroit.
Balester, 25, has been in and out of the big leagues since 2008, and was 5-16 with a 5.17 ERA in 62 games for Washington.
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the time. He also could be found on Twitter @WashingNats. This story was not subject to the approval of Major League Baseball or its clubs.