The Athletics are adding another executive with a player-development background to their front office, hiring Milwaukee Brewers senior vice president Cam Castro as their new general manager, according to Ken Rosenthal of The Athletic.

Castro will work under Taylor Smith, whom the Athletics recently appointed as their president of baseball operations. The move gives the organization a new leadership structure as it continues preparing for its eventual relocation to Las Vegas and attempts to build a more sustainable foundation for the future.

Castro arrives after spending seven years with the Brewers, where he developed a reputation for his work overseeing pitching and player development.

His experience with Milwaukee could be particularly important for an Athletics organization that has struggled to produce consistent major-league pitching. That's despite assembling a promising collection of position players.

Before joining Milwaukee in 2019, Castro worked at Driveline and served as the head baseball coach at Division II Lake Erie College. The Brewers initially brought him aboard as a minor-league pitching coach, giving him an opportunity to work directly with the organization's young arms.

His responsibilities expanded considerably throughout his tenure. Castro eventually became Milwaukee's minor-league pitching coordinator before moving into leadership positions overseeing pitching development and the organization's broader player-development operation.

Following the 2024 season, he received another promotion to senior vice president of player development and performance.

The Athletics have made considerable progress assembling a young offensive core, with several homegrown players establishing themselves as important pieces of the organization's future.

Nick Kurtz, Tyler Soderstrom, Jacob Wilson, Henry Bolte, and Zack Gelof all came through the Athletics' draft process. Shea Langeliers, meanwhile, joined the organization in a trade with the Atlanta Braves before making his major-league debut.

That group provides the franchise with several potential long-term contributors as it transitions toward Las Vegas. However, the organization's ability to develop comparable talent on the pitching side has been considerably less encouraging.

Mason Miller stands out as one of the Athletics' most successful pitching selections in recent years. The right-hander emerged as a major-league difference-maker after being selected in the third round of the draft.

Beyond Miller, Hogan Harris is one of the few pitchers drafted by the organization over the past decade to establish meaningful major league value. The left-hander has accumulated 4.6 career WAR.

There are reasons for optimism, though. Gage Jump made his major league debut in 2026, while Jamie Arnold remains another promising left-handed pitching prospect who could eventually strengthen the organization's rotation.

Improving the Athletics' pitching development system will require more than one front-office hire. The organization needs to establish a consistent approach to identifying, developing and preparing young pitchers for the major leagues.

Castro's arrival suggests that addressing those shortcomings will be an important priority.

Smith also brings experience from organizations with established player-development reputations. Before joining the Athletics, he worked as an assistant general manager with the Boston Red Sox after previously serving as an analyst with the Tampa Bay Rays.