Top 10 biggest trades in Mariners history

SEATTLE — The Mariners wanted to draft Jarred Kelenic back in 2018 before he wound up going to the Mets with the No. 6 overall pick.

But that wound up being no matter for Seattle general manager Jerry Dipoto, who acquired the standout outfielder six months later in a blockbuster trade that sent Robinson Canó and Edwin Díaz to the Mets — a move that signaled a massive shift in Seattle’s focus toward its pipeline. Kelenic (pronounced KELL-nick) blossomed into MLB Pipeline’s No. 4 overall prospect and made his MLB debut in 2021 as the Mariners made their most significant playoff push in years.

Regardless of how Kelenic pans out, the move by Dipoto to move Canó’s money off the books can’t be overstated — especially given the eight-time All-Star’s full-season suspension in 2021 for performance-enhancing drugs. Kelenic also possesses off-the-charts potential and represents a key part of the Mariners’ rebuild.

Here’s where that trade ranks among the rest of the very best in Mariners history:

1. Bringing in the Big Unit
Mariners got from Expos: LHP Randy Johnson, RHP Gene Harris, RHP Brian Holman
Mariners gave up: LHP Mark Langston, RHP Mike Campbell
Date: May 25, 1989

The Mariners didn’t know quite what they were getting when general manager Woody Woodward dealt All-Star southpaw and staff ace Langston and a player to be named (Campbell) to Montreal for a trio of pitchers, but it turned out to be a…

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