Mariners Retain Closer Muñoz, Decline Options on Miller and Robles

Key points

• The Mariners exercised the $9 million option on Andrés Muñoz, who posted a 4.24 ERA and 10 blown saves in 2026 but maintained elite velocity and strikeout rates.
• Seattle declined the $6.075 million option on Bryce Miller, who will remain under club control through 2029 via arbitration; the team will pay a $15,000 buyout for the 2026 option.
• The club declined the $9 million option on Victor Robles, making him a free agent after he received a $500,000 buyout; injuries limited him to 263 plate appearances over two years.
• Muñoz’s contract includes a $10 million option for 2028, while Miller’s recent struggles included a 6.14 ERA in his final 13 starts.
• Robles, 29, slashed .256/.315/.308 in 2026 and joins other Mariners free agents including Randy Arozarena and Taylor Ward.

Background

This decision follows a season where the Mariners faced significant pitching volatility. Previously, the team had navigated roster changes involving other high-value free agents like Michael King, who declined his Padres option, and the Angels' management transitions. The current moves highlight Seattle's focus on cost control and long-term arbitration control for young pitchers like Miller, while letting go of injured veterans like Robles.

How outlets are covering it

MLB Trade Rumors emphasizes the statistical anomalies in Muñoz’s 2026 season, noting a 23.1% home run-to-fly ball rate and a .316 average on balls in play, yet highlights his 99.8 mph average velocity and 37.1% strikeout rate as reasons for retention. Seattle Sports focuses on the broader roster implications, noting that the 40-man roster is now down to 34 players and listing other free agents like J.P. Crawford and Hoby Milner. While both sources agree on the financial figures, MLB Trade Rumors provides deeper analysis on Miller’s arbitration trajectory and the potential trade market for starters, whereas Seattle Sports notes Robles’ limited 2026 stats and the timing of free agency opening on November 2.

Why it matters

These decisions shape the Mariners' 2027 roster structure, balancing high-risk, high-reward investments in elite relievers with cost-effective arbitration control for young starters. Retaining Muñoz despite a poor season signals confidence in his underlying metrics, while declining Robles frees up cap space for potential acquisitions. Miller’s status as a non-free agent through 2029 gives Seattle leverage in future negotiations or trades.

What to watch

The Mariners will negotiate Miller’s 2027 salary through arbitration, with a projected $3.9 million figure. Robles will enter free agency on November 2, likely seeking a low-cost deal with incentives. The team may explore trades for starting pitching, given the depth in their rotation including Logan Gilbert and George Kirby, and the impending debut of prospect Ryan Sloan.