The Seattle Mariners have signed veteran Rob Refsnyder to add depth both in the outfield and at first base.

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The team announced a one-year contract with the free agent on Monday afternoon. The contract is worth $6.25 million with a potential extra $250,000 in incentives, according to Boston Red Sox reporter Chris Cotillo of MassLive.com.

Refsnyder, 34, played 70 games in 2025 for Boston, finishing with 1.2 fWAR. At the plate, he hit .269 with a strong .354 on-base percentage and .838 OPS. He had nine home runs, 12 doubles, 30 RBIs and three stolen bases.

“Rob has been one of the most productive hitters against left-handed pitching over the last four seasons and provides balance and impact offensively to our lineup,” Mariners general manager Justin Hollander said in a press release. “We are excited to welcome Rob and his family to the Mariners.”

Refsnyder hit .302 against lefties with a .399 on-base and .560 slugging last season. Seven of his nine homers and nine of his 12 doubles came against lefties, which he faced 138 times as opposed to 71 plate appearances against right-handed pitching.

Born in South Korea, Refsnyder attended Laguna Hills High School in California and played in college at Arizona. He was a fifth-round pick in the 2012 MLB Draft by the New York Yankees.

The 6-foot, 215-pound Refsnyder is a 10-year MLB veteran, having spent time with the Yankees, Toronto Blue Jays, Tampa Bay Rays, Texas Rangers, Minnesota Twins and Red Sox. He had been with the Red Sox for each of the past four seasons.

Refsnyder has never played more than 93 games in a single MLB season but has solid offensive numbers with a career .255/.343/.387 slash line for a .730 OPS.

While the Mariners listed Refsnyder as an outfielder/first baseman, he has just 29 career appearances at first, and he last played the position in an MLB game in 2020. Refsnyder has 356 career appearances in the outfield, as well as 43 career appearances at second base.

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Refsnyder, who hits right-handed, gives the Mariners a backup option behind one-time All-Star first baseman Josh Naylor, who Seattle re-signed to a five-year contract early this offseason.

The Mariners add Refsnyder to a list of additions in free agency that includes Naylor and backup catcher Andrew Knizner. Seattle also added left-handed reliever Jose Ferrer in a trade with the Washington Nationals.

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