The Seattle Mariners made several moves to their coaching staff on Tuesday. The big headliner of the transactions was decade-long Atlanta Braves coach Kevin Seitzer joining the Mariners in the same role and Edgar Martinez overseeing the hitting program as the Senior Director of Hitting Strategy.

Returning to the Mariners’ staff for 2025 are Manny Acta, Tony Arnerich, Trent Blank, Danny Farquhar, Perry Hill, Edgar Martinez, Kristopher Negrón, and Pete Woodworth. Acta transitions to bench coach, while Martinez takes on a new role as senior director of hitting strategy. Negrón moves to third base coach.

The Seattle Mariners have moved closer to finalizing their MLB coaching staff for the 2025 season and could make it official in the coming days. The team is set to announce the addition of two new hitting coaches and also confirm that Edgar Martinez will still have a major role and oversight on the Mariners’ overall hitting philosophy.