The D-backs signed left-handed reliever T.J. McFarland to a Minor League deal with an invitation to Spring Training on Friday, the team announced.
McFarland, who had pitched all four of his Major League seasons for the Orioles, was designated for assignment and subsequently released after Baltimore acquired Vidal Nuno in late February.
The 27-year-old made 16 relief appearances for the O's in 2016, posting a 6.93 ERA in 24 2/3 innings. He was forced to miss time due to a left knee injury.
McFarland has a 4.27 career ERA in 121 games over his four seasons in the big leagues.