Josh Naylor’s sprint speed ranks 350th in Major League Baseball, according to Statcast data cited by Deadspin. That places the Seattle Mariners’ slugger among the slowest runners in the sport—a liability that undercuts the club’s strategic identity. Under manager Dan Wilson, Seattle has leaned on aggressive base-running to manufacture runs, but Naylor’s lack of foot speed limits the team’s ability to take extra bases, advance on contact, or pressure defenses. His value rests almost entirely on power production, yet even that carries risk: slow-footed first basemen are increasingly exposed by shifting defensive alignments and infield speed. The Mariners acquired Naylor for his bat, but his 350th-place ranking on the basepaths introduces a tension that Seattle must manage all season: how to maximize his power while minimizing the drag of his legs.