Jerry Dipoto made a habit of moving quickly to fill his offseason wish list during his first two years with Seattle, and the Mariners' general manager is at it again, acquiring young first baseman Ryon Healy from the A's on Wednesday in exchange for right-handed reliever Emilio Pagan and Minor League infielder Alexander Campos.

Healy, 25, put up a .271/.302/.451 slash line with 25 home runs and 78 RBIs in 149 games in 2017 for Oakland in his second season (first full season) in the Majors and is under team control for another five years.

The A's were willing to move Healy after the development of first baseman Matt Olson and third baseman Matt Chapman left him competing for time at DH, where Khris Davis is expected to get more starts in 2018.

Though he played third base initially for the A's, Healy is a more natural first baseman, and Dipoto expects him to handle that job on a regular basis next year and potentially beyond.

"After going year to year such a long time with first base a question mark, we're hopeful Ryon can step in and solve much of that problem," Dipoto said. "He's a good offensive player who gives us that right-handed power element."

Finding a first baseman figured to be one of Dipoto's primary objectives this winter after Yonder Alonso and Danny Valencia both became free agents. Dipoto made 15 offseason trades last year in his second season as Mariners GM. This is his first of the current winter, coming as the General Managers Meetings wrap up in Orlando, Fla.