Sizemore, 30, has big league experience with the Tigers, A's and Yankees. His best year was 2011, when he split time with Detroit and Oakland. That year, Sizemore hit a combined .245 with 11 home runs and 56 RBIs. He missed all of the 2012 season and most of the '13 season because of a knee injury.
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.