The Nationals on Friday signed outfielder Joseph Dunigan to a Minor League deal. The left-handed-hitting Dunigan was selected by the Mariners in the fifth round of the 2007 First-Year Player Draft, and spent the last seven seasons in their organization. He never appeared in the big leagues for Seattle.

Dunigan's best season in the Minors was 2009, when he hit .294 with 30 home runs and 104 RBIs for Class A High Desert. Last year, Dunigan spent the entire season in the Minors and was a combined 30-for-129 (.233) with nine home runs and 22 RBIs for the Arizona League Mariners, Double-A Jackson and Triple-A Tacoma.

Dunigan, 27, will likely start the 2014 season at Triple-A Syracuse.