Tai Peete is making Seattle’s old decision look a lot more complicated.
The former Mariners first-round pick, now in the Cardinals organization, turned in a huge Game 1 in the Texas League Championship Series and kept the momentum of a breakout season rolling. Peete went 5-for-5 for Double-A Springfield in a 7-2 win over Amarillo, piling up three singles, a ground-rule double and a 440-foot three-run homer.
He drove in four runs, scored twice and added a steal. It was the kind of night that gets noticed fast, especially by the team that moved on from him.
But the playoff outburst is only part of the story. Peete’s season has been building toward this for months.
In 66 games, he hit .296/.359/.549, reached Double-A, hit for the cycle twice and finished with 13 homers and 16 steals even after losing two months to a concussion. For a player whose biggest knock used to be swing-and-miss, that’s a meaningful shift.
Seattle drafted Peete 30th overall in 2023, and the power-speed package was never the question. The real development has been in the contact.
His in-zone contact rate jumped from 73 percent to 78, and his strikeout rate dropped from 30.6 percent to 26.9. That’s still a lot of strikeouts, but the trend is moving the right way, and he’s doing it without giving up the pop that made him so intriguing in the first place.
That’s where the Mariners’ side of this gets uncomfortable. Seattle had enough belief in Peete’s upside to use him as part of the deal that brought Brendan Donovan in.
It was a serious price to pay because Donovan looked like the kind of steady, top-of-the-lineup answer teams chase. Instead, he’s been hard to count on.
Donovan’s first season in Seattle was wrecked by injuries. He played just 39 games, missed time with groin issues and then went back on the injured list after a concussion in the batting cage.
Nobody puts that on him, but the reality for the Mariners is simple: if they were going to justify the trade, they needed Donovan on the field. Instead, he’s headed toward a season that ends with only 159 plate appearances.
Meanwhile, Peete is delivering the best year of his professional career.
That doesn’t mean the Cardinals can claim credit for every part of the turnaround. Young hitters grow, reps matter and sometimes a prospect just reaches the point where the game starts to slow down.
Still, Seattle has to look closely at what changed once Peete switched organizations. Did St.
Louis alter his swing decisions? Did the Cardinals help him cover more of the strike zone?
Was there something Seattle could have done earlier? Those are the kinds of questions this kind of breakout forces.
Peete is still a Double-A player with plenty left to prove, and a 26.9 percent strikeout rate will follow him in every scouting report. Five hits in a playoff game do not erase that.
But this is bigger than one hot night. Two cycles, a .908 OPS, better contact and a move up to Double-A add up to real progress.
Seattle went for the known commodity and accepted the cost. One season later, St. Louis has the most encouraging piece from the trade, and Peete’s rise is putting that call under the microscope.
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