Cardinals acquire Trey Pooser from Rays as PTBNL in Chris Roycroft deal

What happened

The Cardinals announced they have received minor league right-hander Trey Pooser from the Rays, completing last month's deal that sent middle reliever Chris Roycroft to Tampa Bay. Pooser was the player to be named later in that transaction, per MLB Trade Rumors.

A 6'4" right-hander, Pooser was Tampa Bay's 10th-round pick in the 2024 draft out of the University of Kentucky. He came in as a senior sign and received a bonus of $72K, per MLB Trade Rumors. Since turning pro, he has moved predominantly to the bullpen — which, given the Rays' well-documented affection for developing pitchers in relief roles, is about as surprising as a ground ball to short.

Why it matters

On the surface, this is a minor-league bookkeeping entry: a PTBNL resolution that closes the ledger on a deal involving two relievers who were not exactly household names in their respective organizations. But these transactions carry real organizational weight, particularly for a Cardinals club that is 77-85 and eliminated from both the division race and the Wild Card race. When October is no longer on the table, the work shifts to pipeline inventory — and Pooser represents a low-cost addition to that inventory.

For the Rays, the original deal netted them Roycroft, who had made seven appearances for St. Louis this season before being designated for assignment, per MLB Trade Rumors. Since moving to Tampa Bay, Roycroft has made four appearances, allowing six runs across eight innings, per MLB Trade Rumors. His most recent outing came this afternoon at Fenway Park, where he surrendered a home run to Carlos Narváez in a mop-up role. That is not the line Tampa Bay was hoping to see, though mop-up appearances in July have a way of looking worse than they are — and four appearances is a thin sample on which to render any verdict.

The numbers

Pooser has split this season between two A-ball levels, posting a 3.44 ERA across 49 2/3 innings, per MLB Trade Rumors. His strikeout rate sits at a modest 21%, while his walk rate checks in at 6%. That walk number is the more encouraging of the two: a young reliever who can find the zone consistently gives a pitching development staff something to work with. The strikeout rate leaves room to grow, but for a 2024 draft pick still working through the lower levels of affiliated ball, the overall profile is functional rather than alarming.

The Cardinals' record stands at 77-85 (.475), placing them fourth in the NL Central, 26 games back in the division. Their Wild Card standing ranks seventh, 11.0 games relative to the cut line. They have lost four straight entering the weekend.

Where the club stands

St. Louis heads into a three-game road series at Chase Field against the Arizona Diamondbacks, with Michael McGreevy lined up against Merrill Kelly on Friday, Dustin May opposing Brandon Pfaadt on Saturday, and Andre Pallante facing Eduardo Rodriguez on Sunday.

The Cardinals are eliminated from both the division and Wild Card races, which reframes every roster and organizational decision between now and the end of the regular season. Moves like this one — resolving a PTBNL with a low-level arm — are less about winning in July and more about answering the question every front office asks in a lost season: who might be useful later, and at what cost?

Pooser arrives without occupying a 40-man roster spot, as he is on a minor-league contract. Under general league roster mechanics, a player must be added to the 40-man to be called up to the active roster, which means Pooser's path to St. Louis runs through a future roster decision rather than an imminent one. For now, he is organizational depth — the kind of arm that gets developed quietly while the big-league club plays out the string.

What we don't know yet

The Cardinals' announcement, as reported by MLB Trade Rumors, does not specify which minor-league affiliate Pooser will join or whether any assignment has been made. His exact role going forward — starter, reliever, or some hybrid — is also unaddressed, though his recent usage in pro ball has leaned toward the bullpen.

It is also worth noting that Roycroft's performance in Tampa Bay remains a very small sample. Four appearances and eight innings do not tell a complete story, and MLB Trade Rumors does not characterize the Rays' satisfaction or dissatisfaction with what they received in the original deal.

What to watch

The more interesting thread to follow here may be Roycroft rather than Pooser. Having been designated for assignment by St. Louis before the trade, Roycroft is now pitching in a new environment with something to prove. Whether Tampa Bay continues to use him in meaningful situations — or whether the mop-up role at Fenway is a sign of where he stands in their bullpen hierarchy — will say something about how the Rays view what they got in this exchange.

For Pooser, the developmental markers to watch are straightforward: can the strikeout rate climb as he faces more advanced competition, and does the walk rate hold? A 6% walk rate at A-ball is a legitimate foundation. Whether the stuff plays up enough to miss bats at higher levels is the open question that every 2024 draft pick is still in the process of answering.

The Cardinals, meanwhile, have a weekend in Arizona and a long look at what their roster might need going forward. Pooser is one small data point in that larger accounting — a senior sign who now belongs to a different organization than the one that drafted him, completing a transaction that started last month and ended this afternoon, somewhere between a mop-up inning at Fenway and a box score nobody will remember by September.