As we eagerly await this supremely talented Seattle Mariners squad to finally hit their stride, it's time to tackle another pressing question that's been keeping fans on edge. This week, we're diving into the most nerve-wracking part of any team: the bullpen! We asked you to rank your top three most worrisome Mariners relievers, and the results are in—spoiler alert: they didn't exactly calm our nerves. But hey, airing it out is part of the process. Let's break it down, starting with our trademarked Hot Take Ranking System.

First up, a name that might surprise you: Luis Castillo. Yes, the former starter is now on fans' radars as a potential bullpen arm, thanks to a recent dip in performance. This is a scorching hot take—think Cliff Lee levels of bold. If Castillo moves to the 'pen, it means things have gone seriously sideways. What keeps him effective, even with diminished velocity, is his pinpoint command and consistency. Could shorter outings help him dial up the heat? It's a tempting theory, but without data to back it, we're in pure speculation territory.

Moving on to the second most worrisome reliever: Matt Brash. His oblique injury, landing him on the IL, is a major blow to the Mariners' high-leverage arsenal. Combined with Gabe Speier's injury, this has thrust Jose Ferrer into a key role and added pressure to Bazardo. There's no need to rush Brash back—his return at full strength will be a welcome sight, but for now, the bullpen feels a bit thinner.

And the winner for most worrisome Mariners reliever? Sigh. It's Andrés Muñoz. As the closer, he hasn't been the bulletproof force we saw in 2024 and 2025. When your highest-leverage arm struggles, it's bound to cause the most anxiety. Staff writer Ryan Blake broke down Muñoz's recent issues, particularly with his fastball, which seems to be losing its edge. For a team banking on tight games, that's a concern worth watching.