The Seattle Mariners have signed outfielder/first baseman Rob Refsnyder to a one-year Major League contract worth $6.25 million, with an additional $250,000 in incentives. Refsnyder, 34, has played 10 MLB seasons with several teams, including the Yankees, Blue Jays, Rays, Twins, Rangers, and most recently four seasons with the Boston Red Sox, where he hit .276 with an .804 OPS. Since 2022, he has been particularly effective against left-handed pitchers, batting .312 with a .924 OPS, ranking sixth in batting average and seventh in OPS among players with over 400 plate appearances against southpaws. Refsnyder is known for his platoon hitting, especially against lefties, and provides a right-handed bat to the Mariners' lineup, primarily for platoon roles in the outfield and at designated hitter. Born in Seoul, South Korea, he is the fourth Korean-born player in Mariners history. The Mariners' roster is now full at 40 players. Refsnyder's signing marks a significant addition to the team’s offensive depth, especially against left-handed pitching, and he is expected to contribute as a versatile role player. His career includes notable performances in Boston, where he became a veteran leader and key bench presence, and he has expressed interest in returning to Boston but ultimately signed with Seattle for the upcoming season.