John Lariviere/News Times
At the 2026 MLB Trade Deadline, the St. Louis Cardinals signaled a clear retooling phase
At the 2026 MLB Trade Deadline, the St. Louis Cardinals signaled a clear retooling phase under the direction of front-office leadership, parting ways with fan-favorite outfielder Lars Nootbaar. Sent to the Arizona Diamondbacks to bolster their outfield mix for the stretch run, Nootbaar leaves behind six years in St. Louis.
In exchange for the veteran outfielder, St. Louis secured a intriguing package focused heavily on pitching depth. Right-handed starter Daniel Eagen, left-handed reliever Sandro Santana, and a player to be named later.
Here is a breakdown of the prospects joining the Redbirds’ organization and what they bring to the system.
Daniel Eagen, RHP
23 year old Daniel Eagen stands out as the headliner of the return package. Ranked as the number five prospect in the Diamondbacks’ system and number 13 by Baseball America. He stands at 6-foot-4 and 206 pounds and the right-hander has posted impressive strikeout numbers since entering professional baseball in 2024.
Eagen enjoyed a breakout 2025 campaign, earning the Arizona Diamondbacks’ Minor League Pitcher of the Year honors as well as High-A All-Star recognition after leading the system with 153 strikeouts. He earned a non-roster invitation to Major League Spring Training in 2026, demonstrating how quickly the Diamondbacks viewed his trajectory. At Double-A Amarillo in 2026, Eagen accumulated 109 strikeouts across 87.1 innings. His swing-and-miss ability stems from a heavy, rising fastball paired with an elite sharp-breaking pitch.
While his Double-A ERA sat at 4.95 in the hitter-friendly Texas League, his underlying metrics,including a pair of 10-strikeout outings, highlight high-end starter upside.
St. Louis has prioritized missing bats, and Eagen provides a near-MLB-ready rotation candidate who could push for a big-league rotation spot as early as 2027.
Sandro Santana, LHP (Left-Handed Relief Pitcher)
Left-handed pitching depth in the bullpen is a constant need for modern rosters, and Sandro Santana gives the Cardinals an electrifying high-leverage arm. The 21-year-old lefty has been virtually unhittable out of the bullpen in 2026 across two minor-league levels.
Over 46.1 innings in 31 relief appearances split between High-A and Double-A, Santana produced a 2.14 ERA, a 1.10 WHIP, and held opposing batters to a paltry .188 batting average.
Following his promotion to Double-A Amarillo in late June 2026, Santana was impressive. He put up a 0.57 ERA and a 0.77 WHIP across 11 appearances. Boasting a 37.0% strikeout rate, Santana relies on a lively fastball with late movement and a sweeping slider that left-handed hitters struggle to pick up. Furthermore, in his 46.1 innings, he surrendered only seven extra-base hits (.255 slugging percentage against).
Santana gives St. Louis a potential late-inning weapon who could move rapidly through the high minors. If his control (10.6% walk rate) remains manageable, he projects as a key high-leverage option in Busch Stadium’s bullpen.
Cardinals Refilling the Pitching Pipeline with Swing-and-Miss
Trading a popular core member like Lars Nootbaar is rarely easy, but the deal underscores the Cardinals’ strategy of refilling a pitching pipeline that needed swing-and-miss talent.
Additionally, by securing a 23-year-old high-strikeout starting candidate in Daniel Eagen and a dominant 21-year-old relief arm in Sandro Santana, St. Louis adds two upper-level arms capable of making an impact in the near future. Combined with internal outfield promotions down the stretch, the return positions the Cardinals well to build sustainable pitching depth for seasons to come.
