The Mariners have never lacked for success stories on the mound. They’ve built around Randy Johnson and Félix Hernández, and more recently they’ve turned Logan Gilbert, George Kirby, Bryan Woo and Bryce Miller into real front-line pieces. That part of the organization’s identity is solid.
The same can’t be said for first base.
That’s the position that keeps sticking out when you look at Seattle’s homegrown track record. The list of drafted-and-developed Mariners first basemen is awfully short, and outside of Alvin Davis, it gets thin in a hurry.
Davis, of course, deserves his place in franchise history. He debuted in 1984, won American League Rookie of the Year and gave the Mariners a foundational player when they badly needed one.
He was Mr. Mariner before the team had real national credibility.
But that only sharpens the problem. After Davis, Seattle has spent decades trying to find the next one.
The distinction matters here: drafted and developed. That means John Olerud doesn’t count.
Tino Martinez doesn’t count either, even if he belongs in the conversation for what he became elsewhere. Once you strip away the outside additions, the Mariners’ internal pipeline at first base looks almost empty.
That’s part of why the draft matters so much for this organization right now. First base is supposed to be one of the easier places to find offense, yet Seattle has repeatedly treated it like a spot to patch rather than build. The team has leaned on trades and outside help more than on its own system.
John Olerud came from outside. Richie Sexson came from outside.
Ty France came through a trade. Josh Naylor came through a trade.
Even when the Mariners have gotten production there, it usually hasn’t come from a prospect they raised themselves.
Evan White looked like the closest thing to a modern exception. Seattle believed enough in his profile - athletic defender, Gold Glove upside, some offensive potential - to hand him a historic six-year, $24 million contract in 2019 before he had played a major league game.
But the bat never came around. White played 84 games across 2020 and 2021 and hit .165/.235/.308 before being sent to Atlanta in a salary-dumping move.
Tyler Locklear became another recent example. He hit .156/.224/.311 over 16 games in 2024 before being included in a package deal that brought the Mariners back together with Eugenio Suárez.
Jeff Clement belongs in the same broader frustration. Drafted as a catcher, moved around the defensive spectrum, he never became the impact bat Seattle needed. Different player, same familiar ending.
And that’s the larger issue: when the Mariners miss at first base, it doesn’t feel like an isolated miss. It feels like another entry in a long-running pattern.
Prospects fail everywhere, sure. That’s baseball.
But Seattle hasn’t had enough offensive development wins to make those misses easier to absorb.
Right now, the organization doesn’t have a first baseman in its top 30 prospects. That doesn’t mean panic.
It does mean the upcoming draft deserves a close look if a first baseman is there in the higher rounds. Seattle doesn’t need to abandon what it does best - drafting and developing arms has been its bread and butter - but first base should be on the radar.
Josh Naylor’s 5-year, $92.5 million contract means he isn’t going anywhere, and that makes this the right time to think about what comes next behind him.
The Mariners can’t keep assuming pitching development will cover every weak spot. It has helped keep them competitive, but it hasn’t fixed the bigger gaps. At some point, Seattle has to produce more bats that become real middle-of-the-order answers, and first base is the clearest place to start.
In Other News...
Mariners Being Pushed Toward The Bullpen Move Fans Have Wanted
The Mariners bullpen has been a sore spot for much of the season, and the front office may not be able to wait around for internal fixes alone. With the trade deadline closing in on Aug. 3, Seattle is weighing whether to add another arm even as help could be on the way, with Matt Brash, Cooper Criswell and Carlos Vargas all expected back in August.
Any outside upgrade would come at a steep price, especially for a reliever with the kind of value that tends to be reserved for the biggest deadline swings. The Padres have struggled lately, which only adds to the intrigue around whether they would even consider moving such a prized piece, and for Seattle the question is whether the cost of making the bullpen better now is worth what it could take to get it done. [Read more 🡒]
Mariners Just Suffered Another Brutal Loss They Handed Away
The Mariners left Miami with a sweep on their record and another reminder of how quickly a game can slip away when the margin for error disappears. Seattle fell 8-4 in the finale after the fourth inning turned into the kind of defensive mess that has haunted this club at times, with Bryce Miller unable to stop the damage once the Marlins started stacking contact and pressure.
Before the game got away, Seattle had a chance to set a different tone early but came up empty with runners on. Josh Naylor later provided a brief spark with some aggressive baserunning, but the offense never fully caught up to the hole it had dug, and Millers rough afternoon only deepened the frustration as the series ended with the Mariners having handed away another one. [Read more 🡒]