The highest-paid player on the Seattle Mariners active roster is veteran infielder and run-producer Josh Naylor, who anchors the team's payroll with an annual salary of $18.5 million. Following strategic roster adjustments and trade deadline acquisitions designed to bolster the club's offensive core, Naylor leads a competitive group of major league earners that includes starting pitcher Luis Castillo and franchise cornerstone Julio Rodríguez.