The former Brewers executive joins Taylor Smith's leadership team after helping Milwaukee capture the 2026 World Series.
The Athletics have hired Cam Castro as their new general manager, adding eight seasons of player development experience with the Milwaukee Brewers to their baseball operations department. He joins the organization after serving as Milwaukee's senior vice president of player development and performance, a role he held during the Brewers' 2026 World Series championship season.
He joined Milwaukee in 2019 as a Single-A pitching coach after spending seven seasons coaching at the collegiate level with Defiance College and Lake Erie College. He advanced through several positions within the Brewers organization, including minor league pitching coordinator, director of pitching development and vice president of player development before becoming senior vice president of player development and performance.
During his time in Milwaukee, the 36-year-old helped oversee player development strategies, high-performance systems and medical operations. He also served as a link between the front office and the major league coaching staff, bringing experience in both pitching development and organizational planning.
"I'm beyond thankful to John Fisher, Taylor Smith, Ross Bowen and the entire organization for this opportunity," Cam said in the team's official announcement. "The A's are a historic franchise with an incredible legacy. I look forward to being a part of the next chapter of A's baseball and developing a team, culture, and organization that our fans will be proud of."
Athletics president of baseball operations Taylor Smith also welcomed the appointment, calling him a valuable addition to the front office. "Cam will be an awesome addition to the front office and a great partner to me in running this organization," Smith said. He also praised his development expertise and proven ability to build systems that support winning organizations.
The appointment follows several front-office changes. The Athletics mutually parted ways with former general manager David Forst on August 7, ending his 11-year tenure. Assistant general manager Dan Feinstein was named interim GM. Smith was appointed president of baseball operations on October 19 after spending seven seasons with the Tampa Bay Rays and the previous two seasons as senior vice president and assistant general manager with the Boston Red Sox.
The Athletics finished the 2026 season with a 64-98 record, their fifth consecutive losing campaign. Improving their pitching development, strengthening the roster and getting more production from their young players will be important priorities for the new leadership group.
Cam and Smith now face their first offseason together as they work to establish a more competitive team. With the Athletics scheduled to play their final season in West Sacramento in 2027 before their planned relocation to Las Vegas in 2028, their early decisions will help shape the organization's direction over the coming years.