Arroyo will begin transitioning from second base to left field this month during the Columbian Winter League, Adam Jude of the Seattle Times reports.

Arroyo played second base exclusively in 2025 between High-A Everett and Double-A Arkansas, slashing .262/.401/.433 with 17 homers and 12 steals between the two stops. He has never played the outfield before, but with the Mariners' infield depth, the organization has elected to move the 21-year-old to left field. Arroyo could push to debut at some point during the 2026 season.

Young is the leading candidate to start at second base for the Mariners next season, Adam Jude of the Seattle Times reports.

Young's playing time tapered off for the Mariners down the stretch of the regular season and he did not play during the playoffs. However, Seattle remains high on the 22-year-old's potential despite a .211/.302/.305 batting line in 77 games this season. The Mariners could acquire a second baseman from outside the organization, but if they don't, the left-handed-hitting Young is the top candidate to start at least against righties. Leo Rivas and Ryan Bliss (knee) will also be in the mix.

The Red Sox signed Capra to a minor-league contract Wednesday.

Capra managed just a .125/.157/.177 batting line across 47 contests for the Brewers and White Sox in 2025. The 29-year-old offers plenty of defensive versatility and will give Boston some useful depth at Triple-A Worcester.

Vazquez cleared waivers and was outrighted to Triple-A Norfolk on Sunday, Jake Rill of MLB.com reports.

The 26-year-old was designated for assignment Tuesday, but he'll stick in the organization after passing through waivers unclaimed. Vazquez played 36 games for the Orioles last season and had a .160/.208/.240 slash line in 53 plate appearances.

Atlanta traded Allen to the Astros on Wednesday in exchange for Mauricio Dubon.

Allen's strong defensive capabilities at shortstop allowed him to appear in 135 games in 2025, though he finished the year with just a .535 OPS over 416 plate appearances. Now that he's moving to Houston, where Jeremy Pena is locked in at shortstop, Allen is likely to operate in more of a bench role.

Tampa Bay selected Areinamo's contract from Double-A Montgomery on Tuesday, thus protecting him from the Rule 5 Draft, Marc Topkin of the Tampa Bay Times reports.

The Rays acquired Areinamo in a deal with Milwaukee in late July. The 21-year-old had been playing at the High-A level prior to the trade, but he immediately jumped up Double-A with the Rays and slashed .255/.316/.397 with four homers, 19 RBI and six stolen bases over 37 contests. Areinamo can play multiple infield positions and has shown a bit of pop along with good speed on the basepaths. Perhaps most impressively, he's struck out below a 13 percent clip each of the past three seasons.

The Rays selected Murray's contract from Triple-A Durham and traded him and Everson Pereira (back) to the White Sox on Tuesday in exchange for pitchers Yoendrys Gomez and Steven Wilson, Marc Topkin of the Tampa Bay Times reports.

Murray has yet to make his big-league debut after being selected by Tampa Bay in the fourth round of the 2020 First-Year Player Draft. The 26-year-old spent all of last season with Triple-A Durham, posting a .241/.299/.400 slash line with 18 home runs, 58 RBI and five stolen bases over 572 plate appearances. The power was a bit of a surprise -- Murray's previous minor-league season high in homers was seven -- but he may be a late bloomer in that regard. His most useful trait is probably his versatility, as he can play in both the infield and outfield.

The Guardians selected Watson's contract from Triple-A Columbus on Tuesday, Zack Meisel of The Athletic reports.

Watson split the 2025 season between Double-A and Triple-A, slashing .250/.346/.467 with 16 homers, 61 RBI, 53 runs scored and 17 stolen bases over 429 plate appearances between the two levels. Now that he owns a place on Cleveland's 40-man roster, the 22-year-old outfielder is ineligible for the Rule 5 Draft and will most likely remain at Columbus for the start of the 2026 campaign.

The Guardians selected Genao's contract from Double-A Akron on Tuesday, Zack Meisel of The Athletic reports.

One of the Guardians' top prospects, Genao missed the start of last season with a shoulder injury and never got on track after returning, logging a .259/.323/.359 slash line with two home runs and six steals in 77 games as a 21-year-old at Double-A. The switch-hitting shortstop is a strong bounce-back candidate in 2026, and while he may return to Double-A at the start of the year, he should spend the bulk of the year at Triple-A and could even make his big-league debut next summer.

The Orioles designated Vazquez for assignment Tuesday.

Vazquez re-signed with Baltimore on a one-year contract in late October but will end up having a short stay on the 40-man roster. The 26-year-old appeared in 36 games for the O's last season and had a .160/.208/.240 slash line in 53 plate appearances.