The Seattle Mariners and Tampa Bay Rays have finalized a deal that sends right-handed pitcher Casey Legumina to Florida in exchange for minor-league right-hander Ty Cummings. The move, announced on Friday, comes just days after the Mariners designated Legumina for assignment to make room on their 40-man roster.
Details of the Mariners Trade of Casey Legumina
The Mariners trade Casey Legumina following a brief stint where the 27-year-old found himself on the roster bubble. Legumina was originally designated for assignment on Tuesday, a move necessitated by Seattle’s need to protect other assets and manage their 40-man roster flexibility. Rather than risking a waiver claim where they would lose him for nothing, the Mariners front office successfully pivoted to find a trade partner in the Tampa Bay Rays.
Legumina, who was acquired by Seattle from the Minnesota Twins in 2023, has shown flashes of potential as a high-velocity relief option. However, with the Mariners boasting one of the deepest pitching staffs in the American League, consistent opportunities at the Major League level were hard to come by. By moving him to Tampa Bay, Seattle secures a developmental arm while giving Legumina a fresh start in an organization renowned for its ability to maximize pitching talent.
Analyzing Casey Legumina’s Potential in Tampa Bay
The Tampa Bay Rays have built a reputation as the league's premier "pitching factory," and their interest in Legumina suggests they see untapped upside in his profile. During his time with the Mariners organization, Legumina utilized a mid-90s fastball paired with a sharp slider, a combination that often leads to high strikeout rates in a relief role.
While his MLB ERA has fluctuated, the underlying metrics—specifically his spin rates and velocity—remain attractive to analytical front offices. In Tampa Bay, Legumina will likely work with the Rays' pitching coaches to refine his command and perhaps tweak his pitch usage. For a Rays team that frequently cycles through relief arms to maintain a fresh and effective bullpen, Legumina represents a low-risk, high-reward acquisition who could potentially contribute to their big-league roster early in the 2025 season.
Who is Ty Cummings?
In return for Legumina, the Mariners receive Ty Cummings, a 22-year-old right-hander who was a seventh-round pick by the Rays in the 2023 MLB Draft out of Campbell University. Cummings represents the type of young, controllable talent that the Mariners' scouting department excels at developing.
During his collegiate career and his initial professional outings, Cummings has been noted for:
- A heavy sinker that generates significant groundball rates.
- A competitive strike-throwing ability that limits free passes.
- Versatility to work as either a bulk-inning reliever or a traditional starter in the lower levels of the minors.
By adding Cummings, the Mariners are effectively replenishing their minor league depth with a younger arm who fits their developmental timeline. While he is likely several years away from contributing at T-Mobile Park, his profile aligns with Seattle's philosophy of building a sustainable pipeline of power arms.
Roster Implications for Seattle and Tampa Bay
This trade serves as a classic "challenge trade" between two of the most active front offices in baseball. For Seattle, the move was largely about roster management. With players like Alex Hoppe and other rising prospects vying for spots, the Mariners needed to clear space without losing talent for zero return. By converting a DFA candidate into a legitimate prospect like Cummings, the Mariners' front office continues its trend of efficient asset management.
For the Rays, the acquisition of Legumina adds immediate depth to their 40-man roster. Tampa Bay is never shy about taking flyers on pitchers with elite raw stuff, and Legumina fits that mold perfectly. If the Rays can help him find the zone more consistently, they may have found a middle-relief pillar for the upcoming season.
As the MLB offseason continues to heat up, this minor trade highlights how competitive teams use the margins of their rosters to stay flexible. Both the Mariners and the Rays walk away with pieces that fit their specific organizational needs heading into spring training.
Sources & Original Reporting
