Refsynder, who played the last four seasons with the Red Sox, signs a one-year deal with the Mariners.

Boston sends right-handed pitcher Hunter Dobbins and two prospects to St. Louis for the three-time All-Star.

Grissom played just 31 games with Boston after he was acquired in exchange for Chris Sale.

The Red Sox send outfielder Jhostynxon Garcia and a minor leaguer pitcher to Pittsburgh in a five-player deal.

Boston is sending pitcher Richard Fitts and a minor leaguer to St. Louis for the three-time All-Star.

Chapman recorded 32 saves in 34 chances in his first season in Boston.

Duran avoids arbitration by agreeing to a $7.75 million contract.

Bregman, a third baseman, opts out of his deal, and Giolito, a right-handed pitcher, declines his option.

Crochet is in the running for the AL Cy Young Award, while Anthony is up for Rookie of the Year.