Chris Heisey is congratulated by Manager Dusty Baker after hitting a home run during the 2013 season. Heisey could be reunited with Baker next season. (Morry Gash/AP)

The Nationals continue to add low-risk veterans to the organization, bringing back infielder Scott Sizemore and bringing in outfielder Chris Heisey on a minor league deal. Both are invited to major league spring training.

Sizemore joined the Nationals organization in August, then hit .426 in 14 games with Class AAA Syracuse. The 30-year-old has played 166 games with four different teams since debuting with the Tigers in 2010, most of them at third base. He went to high school in Chesapeake, Va., and played at Virginia Commonwealth before the Tigers drafted him in the fifth round. Sizemore seems unlikely to make the 25-man roster, given that the Nationals currently have a former Silver Slugger set to play third base (Anthony Rendon) and a glut of middle infielders in Yunel Escobar, Danny Espinosa and Trea Turner, all of whom may compete for starting positions at shortstop and second base next year.

Heisey may have a better chance. The 30-year-old played 33 games with the Dodgers in 2015, and split time in the minors in the Los Angeles and Toronto organizations. The Reds drafted Heisey in 2006, he debuted with them in 2010, then hit 18 homers for them in 2011, when Dusty Baker was his manager. Heisey is a right-handed hitter with power, and while Nationals General Manager Mike Rizzo admits the Nationals need to get more left-handed, he may have a chance to compete for a spot with left-handed hitting Matt den Dekker, who impressed late in 2015 when given more regular playing time.

The Nationals also brought back Reed Johnson and Sean Burnett on minor league deals with invitations to spring training. The team normally carries somewhere around 60 players at major league spring training, a near even split between pitchers and catchers.

Reliever David Carpenter, who was outrighted by the Nationals earlier this week, inked a minor league deal with an invitation to spring training with the Atlanta Braves, according to a person familiar with the situation. Carpenter, who the Nationals acquired in a summer trade, appeared in eight games before suffering season-ending shoulder inflammation.