Jason Kanzler Has Never Managed a Game at Any Level. The Mariners Just Hired Him Anyway.
The Seattle Mariners spent 37 days looking for a manager, started with a list of 30 to 40 names, and landed on a 36-year-old who has never filled out a lineup card in a professional game.
Jason Kanzler was named the Mariners field manager on Tuesday, the 22nd in club history. He spent the last three seasons as the Chicago Cubs director of player development. Before that he was a major league coach and then assistant hitting coach in Houston, and before that a hitting coach and coordinator in the Astros minor league system. Before any of it, he taught chemistry and physics at a high school in Katy, Texas.
What he has never done, at any level, in the majors or the minors, is manage.
This Is a Pattern in Seattle, Not an Accident
Jerry Dipoto has now hired three managers since taking over baseball operations in September 2015. Neither Scott Servais nor Dan Wilson had ever managed a professional game when Dipoto gave them the job, and now Kanzler makes three.
Dipoto said during the search that prior managing experience “would be preferred” but was “not a prerequisite.” Read that twice and it starts to sound like a preference he has never once acted on.
His stated reasoning this time: “Our goal in this process was finding a manager with the ability to challenge all of us to improve.” General manager Justin Hollander added that Kanzler “consistently demonstrated elite leadership skills, high-end content and an ability to connect and partner with players, staff and front office.”
“High-end content” is now a phrase people use about a baseball manager. That is where the sport has landed.
The Guy They Passed On Had Just Won Two Division Titles
The other finalist was Joe Espada, who managed the Houston Astros for three seasons and went 256-229. He won the AL West in 2024 and again in 2026. The Astros declined to renew his contract on Oct. 14, a decision much of the industry read as a firing. Rocco Baldelli, the former Twins manager, was considered a favorite and withdrew citing family matters.
So Seattle had a division-winning manager available and took the player development executive instead. Kanzler and Espada worked the same Astros staff in 2022, the year Houston won the World Series.
At 36, Kanzler is the second-youngest manager in baseball behind Washington’s Blake Butera. The club did not disclose contract length or money.
He Inherits the Only Franchise That Has Never Reached a World Series
The 2026 Mariners went 76-86 and finished third in an AL West where nobody cleared .500. Houston won the thing at 81-81. Seattle was 36-32 on June 9 with a three-game division lead and never got more than four games over .500 again. They scored 664 runs, third-fewest in baseball, and ranked 26th in defensive runs saved.
Cal Raleigh hit 60 home runs in 2025. In 2026 he batted .182 with 23 home runs in 126 games and missed 29 with an oblique strain. Julio Rodriguez hit .247 with a .708 OPS, both career lows, though he did become the first player in history to open a career with five straight 20-homer, 20-steal seasons.
Dan Wilson was told on the final day of the regular season that he would not be back, then walked to the podium and announced it himself before the front office got there. That is the room Kanzler is walking into.
The Bet Is Real, and So Is the Risk
There is a case for this. Development-track hires are the league’s current fashion, and a front office that wants its system run its way tends to prefer someone who helped build the system. Kanzler coached in a World Series dugout. He is not a stranger to major league players.
But Seattle has run this experiment twice and fired both results. Hollander said the club believes Kanzler is “the right person to lead our organization back to the Postseason.” The last two were supposed to be that too.
A longtime sports reporter, Carlos Garcia has written about some of the biggest and most notable athletic events of the last 5 years. He has been credentialed to cover MLS, NBA and MLB games all over the United States. His work has been published on Fox Sports, Bleacher Report, AOL and the Washington Post.
