The Seattle Mariners have acquired right-handed pitcher Carson Fulmer from the Pittsburgh Pirates in a move that adds experienced depth to their pitching organization. According to reporting from Alex Stumpf, Fulmer was not part of Pittsburgh’s 40-man roster at the time of the deal, meaning Seattle will not necessarily need to make an immediate roster move unless his contract includes any clauses that would force promotion or allow him to opt out under certain conditions. While the exact return going back to Pittsburgh has not been confirmed, early indications suggest the deal could be a minor transaction, potentially involving cash considerations rather than a player exchange.
Fulmer, now 32 years old, is a veteran of parts of nine Major League Baseball seasons. Over the course of his MLB career, he has logged 256.2 innings and has struggled to consistently limit runs, carrying a career earned run average of 5.44. His strikeout and control numbers have also typically hovered around or slightly below league averages. He owns a strikeout rate of about 20 percent, while issuing walks at a rate near 11.9 percent, reflecting ongoing command challenges throughout his time in the majors. On a more neutral note, his ground ball rate sits at roughly 40.9 percent, which is fairly average and suggests he is not overly prone to allowing elevated contact compared to other pitchers.
Fulmer spent the previous Major League season with the Los Angeles Angels. At the conclusion of that year, he was removed from their roster via outright assignment, which allowed him to become a free agent. He later signed a minor league contract with the Pittsburgh Pirates as he looked to continue his career and work his way back to a consistent role at the big league level.
During the current season, Fulmer has been pitching at the Triple-A level for Indianapolis in the Pirates’ system. Across 16 appearances, he has thrown 34 innings. His results in terms of traditional statistics have been difficult, as reflected by a 6.35 ERA. However, some underlying indicators suggest his performance may not be quite as poor as the surface numbers indicate. For instance, he has posted a high batting average on balls in play of .330, which often signals some level of misfortune or poor defensive support. In addition, his strand rate of 63 percent is on the lower side, meaning more of his allowed baserunners have come around to score than average.
His strikeout rate at Triple-A this season sits at 17.5 percent, which is below average, but he has maintained a ground ball rate of 43.1 percent, which is a somewhat encouraging sign that he is still generating usable contact outcomes at times. While his overall performance has not forced his way into a Major League opportunity with Pittsburgh, his experience and ability to work multiple innings likely made him appealing as a depth option for Seattle.
Looking ahead, the Mariners will need to decide whether Fulmer fits into their 40-man roster plans. Because he is out of minor league options, any promotion to the big league club would require him to remain on the active roster. If Seattle chooses not to add him to the 40-man roster immediately, he will instead function as a flexible bullpen piece in the upper minors, providing organizational depth and coverage for multiple-inning relief situations.
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