The Nationals announced the signing of yet another left-handed reliever on Monday, serving as depth and insurance behind Zach Duke and Bill Bray. Will Ohman, 35, agreed to a minor league deal with the Nationals with an invitation to major league camp.

Ohman, a 10-year major league veteran, spent the last two seasons with the Chicago White Sox. After struggling and posting a 6.41 ERA in 26 2/3 innings last season, the White Sox designated the left-handed reliever for assignment. He has a career 4.28 ERA in 10 major league seasons. He has pitched for the Cubs, Orioles, Marlins, Dodgers and Braves. In his career, he has held left-handed batters to a .210 average.

Ohman is added depth behind Duke, the only Nationals left-hander on a major league contract, and Bray, who, if healthy and effective, could make the roster as the bullpen’s second left-hander. Ohman is the fifth left-handed pitcher signed by the Nationals this offseason, including Duke.

So far, the list of Nationals non-roster invitees also includes the following players: lefty relievers Fernando Abad, Bill Bray and Patrick McCoy; lefty starter Brandon Mann; righty starters Tanner Roark, Ross Ohlendorf; righty reliever Jeremy Accardo; catchers Carlos Maldonado and Chris Snyder; infielders Micah Owings, WIll Rhymes, Matt Skole and Zach Walters.