What happened: The Boston Red Sox finalized a deal sending an infielder to the Detroit Tigers in exchange for cash considerations. The transaction removes the 25-year-old from Boston's major league reserve list heading into the offseason.

Why it matters: Boston gains immediate flexibility on its 40-man roster ahead of upcoming winter roster deadlines. For Detroit, acquiring infield depth adds organizational coverage before free agency and the Rule 5 draft.

What to watch: Both front offices turn attention to setting their 40-man rosters ahead of the winter transaction deadlines.