Mariners Hire Jason Kanzler as New Manager

Seattle has appointed Jason Kanzler as its new manager, bringing a 36-year-old player development specialist into the leadership role ahead of the 2027 MLB season. The Mariners announced the decision on Tuesday, November 3, 2026, making Kanzler the 22nd manager in franchise history and one of the youngest skippers in Major League Baseball.

Kanzler replaces Dan Wilson, whose tenure ended after more than two seasons following the conclusion of the 2026 regular season. He becomes the second-youngest manager in MLB, behind Washington Nationals manager Blake Butera, who is 34.

Before joining Seattle, Kanzler spent the previous three seasons as the Chicago Cubs' director of player development. He emerged as the preferred candidate after reaching the final interview round alongside former Houston Astros manager Joe Espada.

The final interviews took place at T-Mobile Park last week, involving representatives from the Mariners' ownership group, baseball and business operations, and Major League coaching staff. According to MLB.com, the organization began its final decision-making process last Thursday and continued through the weekend.

Seattle president of baseball operations Jerry Dipoto highlighted Kanzler's leadership and communication abilities when explaining the appointment.

"Our goal in this process was finding a manager with the ability to challenge all of us to improve. Jason has the mindset, expertise, communication skills and intensity to help create a championship standard here in Seattle." Dipoto said.

Kanzler brings experience across several levels of professional baseball, although he has never previously managed a team. Before his Cubs appointment, he spent five seasons in the Houston Astros organization and worked alongside Espada as a Major League hitting coach from 2022-23.

He was also part of Dusty Baker's coaching staff during Houston's 2022 World Series championship campaign. His earlier responsibilities included working as a Minor League hitting coach and later becoming Houston's Minor League hitting coordinator.

Kanzler's professional baseball career began as a player in the Minnesota Twins organization after the club selected him in the 20th round of the 2013 Draft. He played from 2014-15, reaching the High-A level before moving into coaching and player development.

Between his playing and coaching careers, Kanzler taught high school physics and chemistry in suburban Houston. He also spent two seasons as an assistant coach in the Cape Cod League and earned a bachelor's degree in psychology from the University of Buffalo.

Mariners general manager Justin Hollander said the organization valued Kanzler's ability to connect with players, staff members and front-office personnel.

"Throughout the process, Jason consistently demonstrated elite leadership skills, high-end content and an ability to connect and partner with players, staff and front office. We all believe Jason is the right person to lead our organization back to the postseason." Hollander said.

Dipoto previously indicated that Major League managerial experience would be desirable but not essential. His two previous managerial appointments, Scott Servais in 2015 and Wilson in 2024, also involved candidates without prior managerial experience.

The appointment comes with significant expectations for Seattle's existing roster. The Mariners retain a rotation featuring six homegrown starters and an All-Star position-player core comprising Cal Raleigh, Julio Rodríguez and Josh Naylor.

Seattle is counting on Kanzler to improve the team's performance through stronger communication and accountability, areas that Dipoto and other organizational members identified as shortcomings under the previous coaching staff.

The Mariners have also moved on from four members of their previous coaching group and agreed to terms with new hitting coach CJ Gillman, as reported by MLB.com. Kanzler's appointment marks another major change as the organization prepares for the 2027 campaign.