As the Cardinals navigate the early stages of a rebuild under new president of baseball operations Chaim Bloom, infielder/outfielder Brendan Donovan stands as perhaps the most appealing trade commodity on the St. Louis roster. The Mariners spent much of last offseason trying to pry Donovan loose from the Cardinals (under then-president of baseball ops John Mozeliak), and they’ve once again approached the Cards to express interest in coming together on a trade involving Donovan, per Adam Jude of the Seattle Times.
Donovan, 29 in January, turned in a sharp .287/.353/.422 batting line in 2025 — about 19% better than league-average performance, by measure of wRC+. He popped 10 homers in 515 plate appearances, piled up 32 doubles, walked at an 8.2% clip and struck out in only 13% of his plate appearances. It’s the fourth straight year of comparable hit-over-power and OBP-fueled offense for Donovan, who’s a lifetime .282/.361/.411 hitter in the majors. He’s walked at a 9.1% clip and fanned in just 13.5% of his 2006 MLB plate appearances dating back to 2022.
On top of Donovan’s generally strong output and impeccable bat-to-ball skills, he’s a gifted defender who can handle just about any position on the diamond. He’s played primarily second base and left field but has some decent experience at shortstop (106 innings), third base (270 innings), first base (151 innings) and in right field (205 innings).
For the Mariners, Donovan is an ideal fit. He can handle second base, third base or an outfield corner — all currently unsettled in Seattle at the moment. Prospects Cole Young and Colt Emerson are highly touted young players who could step up and solidify second base and/or third base, but Young struggled in his first 77 MLB games last year and Emerson is a 20-year-old who’s played all of six games at the Triple-A level thus far. Victor Robles is penciled into right field alongside Randy Arozarena and Julio Rodriguez, but Robles and Dominic Canzone could fill more part-time roles if Donovan is brought in and gets occasional work on the outfield grass.
Donovan also embodies the type of high-contact bat the Mariners have hoped to add in recent offseasons. The M’s had the second-highest strikeout rate of any MLB team in both 2023 and 2024. They dropped to seventh last year. Over the past five seasons, only the Angels (24.9%) have a higher team strikeout rate than the Mariners (24.7%). A full season of Josh Naylor helps to combat that, but 500-plus plate appearances from Donovan would give them a pair of premium contact bats at or near the top of the lineup.
Of course, Donovan’s versatility, production and affordability make him an ideal fit for the majority of contending teams seeking to upgrade their lineup this offseason. MLBTR contributor Matt Swartz projects a $5.4MM salary for Donovan next year. He’ll be owed a raise on that heading into 2027 — his final season of club control (barring an extension between now and then). Any team acquiring Donovan would do so knowing that they can have him for something in the rough vicinity of $15MM total through 2027. It’s an unmitigated bargain, but that also means he’ll come with a lofty asking price. The Mariners, with one of MLB’s top farm systems, are well-equipped to make a compelling offer.
Katie Woo of The Athletic wrote this week that the Cardinals are only inclined to trade Donovan if they’re blown away by an offer they don’t think they can refuse. Interest in Donovan is so high, however, that Woo suggests such an offer is likely to materialize. Jeff Passan and Kiley McDaniel of ESPN offered similar sentiments yesterday, writing that while the Cards “are not eager” to make the move, Donovan’s market is “percolating” and an eventual trade seems likelier than not.
In addition to the Mariners, Donovan is known to have drawn interest from the Pirates, Astros, Guardians and Royals. That’s surely just a fraction of the clubs to have reached out to the Cardinals regarding Donovan. The Dodgers, Yankees and Blue Jays were all tied to Donovan last offseason and/or at this past summer’s trade deadline.