Manny Acta, Tony Arnerich, Trent Blank, Jarret DeHart, Perry Hill, Kristopher Negrón, Carson Vitale and Pete Woodworth return to Major League staff; Brant Brown joins staff as Bench Coach & Offensive Coordinator, Tommy Joseph joins as Assistant Hitting Coach — SEATTLE, Wash. — Seattle Mariners President of Baseball Operations Jerry Dipoto, Mariners Executive Vice President & General Manager Justin Hollander and Mariners Manager Scott Servais announced today the Major League coaching staff for the 2024 season.