The Boston Red Sox are adding veteran first baseman Nathaniel Lowe after the Washington Nationals designated him for assignment, according to ESPN's Jeff Passan.

Boston left the bases loaded in the eighth, ninth and 10th innings Tuesday, squandering crucial opportunities to score.

The Boston Red Sox are signing slugging first baseman Nathanial Lowe after he had been designated for assignment by the Nationals last week in favor of younger players, ESPN.com reported. Lowe, 30, will join one of the most potent offenses in baseball with Boston in the midst of a tight American League playoff race.