This past season, Stewart played with the Angels, batting .176 with two home runs and seven RBIs in 24 games. The 29-year-old is best remembered for his four-plus years with the Rockies from 2007-11. Stewart's best season was in 2009, when he hit .228 with a career-high 25 home runs and 70 RBIs.
The Nationals' bench was one of the least productive in baseball this past season. If he makes the team in 2015, Stewart could add left-handed pop off the bench.
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.