What happened: The transaction temporarily bolsters the pitching staff ahead of Wednesday's twin bill. Major League Baseball rules allow organizations to carry an additional player specifically to handle the demands of a doubleheader.

Why it matters: Playing 18 innings in a single day severely taxes a bullpen, making an extra arm critical for workload management. The temporary activation protects primary relievers from excessive usage during the road trip.

What to watch: A corresponding move will be required to return to the standard 26-man active roster following the second contest.