The Seattle Mariners, fresh off winning the AL West division for the first time since 2001 and advancing to the American League Championship Series in 2025, have made a major move to enhance their infield. Over the winter, the Mariners secured Brendan Donovan from the St. Louis Cardinals as part of their efforts to sustain and improve on last season’s success. This trade involved parting ways with several promising prospects to bring Donovan aboard.
General Manager Details Prospects Included in the Trade
During an interview on MLB Network Radio, Mariners general manager Justin Hollander elaborated on the assets exchanged for Donovan, highlighting the notable young talent the club relinquished.
“If the prospects were certain, no one would ever trade them for now value. You would just keep the future value if you knew it was going to come to fruition completely. In this deal, we obviously had to part with a lot of players that we like. First and foremost, Jurrangelo Cijntje was a player that the Cardinals identified very early on as a player they liked. He’s a first-round pick (from) a couple of years ago. There’s some fame associated with his ability to switch-pitch. I don’t want to let the fame outshine how good and talented he is, he’s really good. Really excited about what the future holds for Jurrangelo,”
Hollander said.
Hollander also emphasized the inclusion of Tai Peete in the transaction, noting his versatility and athleticism.
“Tai Peete was our first-round pick a couple of years ago. Really good athlete, played shortstop in high school, moved to center field last year. Took to it naturally, does a lot of things well. The third pick for us, in addition to the draft pick, was Ben Williamson. Ben was also on the same draft as Tai Peete. A high-level defender, elite defense, as good as anybody in the league at third base. Really high floor, with a real ceiling, as the bat continues to make adjustments. We feel like everybody did well in this trade, everybody got things that they think help them. We’re not trying to win a deal, we’re trying to make the Mariners the best team in the short run and the long run,”
he added.
Outlook for Brendan Donovan’s Role With the Mariners in 2026
On February 4, MLB.com insider Daniel Kramer provided insight into how Donovan is expected to fit into the Mariners’ lineup and defensive arrangements for the upcoming season. According to sources close to the team, Donovan will be Seattle’s everyday leadoff hitter and primarily serve as the starting third baseman during Spring Training. However, his defensive position may shift based on matchup strategies and internal competition.
“The 2025 All-Star will be Seattle’s everyday leadoff man but defensively he’ll move around the diamond based on matchups impacting other positions, according to sources familiar with the club’s thinking. He’s slated to be their primary third baseman entering Spring Training,”
Kramer wrote.
“But that could change based on positional competitions — specifically among Cole Young and Colt Emerson. Brendan Donovan, in the club’s eyes, can serve as that ideal bridge to the young pair, given that he’s under club control for two years and at an affordable $5.8 million for 2025,”
he added.
Donovan came off his 2025 season with strong performance metrics, batting .287 with 10 home runs and 50 RBIs, which earned him his first All-Star selection.
Implications of the Trade for Mariners’ Future Competitiveness
The decision to trade high-caliber prospects like Jurrangelo Cijntje, Tai Peete, and Ben Williamson reflects the Mariners’ commitment to immediate and sustained success. As Hollander explained, the organization prioritized building the best possible roster not just for the upcoming season but also for the long term, rather than aiming to simply “win a deal.” Donovan’s acquisition is a strategic move designed to provide on-field leadership and versatile defensive options, while the prospects traded away are expected to contribute meaningfully to the Cardinals’ future.
With Donovan securing a pivotal role and playing under team control for the next two seasons at a reasonable salary, Seattle is positioning itself to remain competitive in the AL West and contend further in the postseason. The team’s calculated gamble balances proven talent with emerging prospects, indicating the Mariners’ determination to maintain momentum following their breakthrough season.
The @Mariners know what they gave up to get Brendan Donovan to Seattle and feel like everyone involved in the trade wound up winning.
🔗 https://t.co/iXax8hx4iO pic.twitter.com/V1USUWGQ1Y
— MLB Network Radio on SiriusXM (@MLBNetworkRadio) February 8, 2026
