The Cardinals have added a bullpen arm just under the wire, acquiring southpaw reliever Caleb Ferguson from the Reds on August 3, 2026 in exchange for $250K of international bonus pool space. It is a small-price trade on paper, but one that gives St. Louis another left-handed option as the deadline passed.
What the Cardinals got
Ferguson arrives in St. Louis as a rental, and that detail matters. The Cardinals did not have to give up a player to get him, only a slice of international bonus pool space, which is the kind of move clubs make when they want to improve the bullpen without touching the core of the roster.
For the Cardinals, the appeal is simple: add depth, add a left-handed arm, and do it without paying a heavy price. In a trade market where relief pitching can become expensive very quickly, that matters.
What the Reds received
Cincinnati’s return was financial flexibility rather than a player. The Reds received $250K of international bonus pool space, a modest exchange that suggests they were willing to move Ferguson once the deadline pressure built.
The timing also shows how close this came to the finish line. The deal was reported by MLB Trade Rumors at 5:19pm CDT, and it landed just under the wire as clubs finalized their deadline plans.
For both teams, this was the sort of move that can look minor in isolation but still tell you something about direction. The Cardinals wanted help for the bullpen. The Reds turned a rental into bonus pool room. In a deadline week, that is often how the market works.
