Seattle’s Defensive Future

In baseball, defense does not always receive the same attention as offensive power. A home run stays in our memory, while a great defensive play can go unnoticed. Yet behind every out are preparation, anticipation, coordination, and hard work.

The Seattle Mariners are entering a new chapter. Perry Hill will not return as the team’s infield coach in 2027, ending an eight-season run on Seattle’s major league coaching staff. His departure closes a chapter for one of baseball’s most respected defensive instructors.

Although the change is happening in Seattle, its implications are also worth following in Everett. The AquaSox are part of the path prospects take before reaching the major leagues, and defensive development remains an important piece of that journey.

Hill’s Legacy

Hill is known for his six-F methodology: Feet, Field, Funnel, Footwork, Fire, and Follow. The system breaks down the defensive sequence, from moving toward the ball and fielding it to transferring it, making the throw, and following through.

The goal is to turn each action into a coordinated, repeatable sequence, even under pressure. It is not simply about fielding a ground ball; it is about preparing a player to execute the entire play.

During his time in Seattle, Hill worked with players who earned significant defensive recognition, including J.P. Crawford, Evan White, and Dylan Moore, all Gold Glove Award winners during their time with the organization.

His departure raises an interesting question: Which defensive principles will the Mariners maintain, and how will those lessons continue to be taught throughout the organization?

We do not know the answer yet. What we can do is watch how the players within that system continue to develop.

Cole Young: A Connection to Everett

Cole Young is one of the clearest examples of that connection. The infielder played for Everett in 2023 and continued his climb through the minor leagues before establishing himself in Seattle.

In 2026, he was a finalist for the American League Gold Glove Award at second base. His journey connects the work done in the minor leagues with the recognition a player can earn at the major league level.

However, evaluating defense requires more than looking at awards or fielding percentages. Traditional statistics record results, while advanced metrics attempt to measure other aspects of performance, such as range and the ability to turn opportunities into outs.

That is why defensive development should not be evaluated solely by the number of errors a player makes. The difficulty of each play, the player’s position, and the opportunities he has to make an impact also matter.

What to Watch in Everett

During the upcoming season, the AquaSox will once again give us an opportunity to follow the defensive development of Seattle’s prospects. Games played at each position, innings, putouts, assists, errors, and double plays can help us understand how defensive responsibilities are distributed.

Those statistics alone do not tell the whole story of a defender’s ability. But when combined with watching the games, they can help identify trends and raise better questions about each player’s development.

Hill’s departure does not necessarily mean Seattle will abandon the principles that have guided its defensive work. The next chapter will depend on the organization’s decisions and how those lessons are carried onto the field.

From Everett, we will be able to follow part of that process: watching prospects, evaluating their tools, and tracking how their decisions and defensive execution evolve.

Perry Hill’s departure marks the end of one chapter, but not the end of his legacy. The work he did over the years will remain part of the Mariners’ defensive identity and their approach to player development.

A new era now begins, with the responsibility to preserve that foundation, strengthen what has already been built, and find new ways to raise the organization’s defensive standards. From Seattle to Everett, the challenge will be to carry those principles forward and take them even further.

Because successful player development does not depend on one person alone. It is built over time, passed from one generation of players to the next, and strengthened with every new chapter. Hill leaves a lasting mark; now, the Mariners have an opportunity to build on that foundation and take their defensive work to the next level.

PICTURED ABOVE: Cole Young

PHOTO BY: Evan Morud

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