Padres’ Mason Miller trade gets more expensive with projected arbitration raise

A.J. Preller paid a breathtaking prospect price to bring Mason Miller to San Diego. After his first full season, the Padres are getting another proper look at the financial tab. Matt Swartz from MLB Trade Rumors projects Miller to earn $8.1 million through arbitration in 2027, more than double his $4 million salary from this season. 

Honestly, it shouldn’t be a surprise. Miller is an elite closer with outrageous late-inning dominance and has the service time required to start making real money. This is exactly what the Padres signed up for.

They acquired Miller and JP Sears from the Athletics at the 2025 trade deadline for a four-prospect package headlined by Leo De Vries, then the No. 3 overall prospect in baseball. Braden Nett, Henry Baez and Eduarniel Núñez went with him. Miller was the centerpiece, Sears was rotation depth and Preller shoved another stack of future value across the table.

This trade was always going to be judged by what the Padres could do in October. The arbitration process just adds another line to the evaluation.

Mason Miller’s Padres salary is only beginning to climb

An $8.1 million salary remains perfectly reasonable for a closer of Miller’s caliber. The more important piece is where this salary sits on the timeline.

He qualified for arbitration early as a Super Two player, giving him four trips through the process instead of the usual three. He remains under club control through 2029. Those extra years were part of his enormous trade value. But even though there’s “club control,” it shouldn’t be confused with affordable the entire way through.

Miller’s salary is beginning to reach the steep portion of the climb. Another season full of saves, strikeouts and high-leverage work will push the number higher in 2028. Then the Padres will have to get ready to do it again in 2029.

Miller at $8.1 million is definitely still a bargain. That’s a great price for a roster that’s already carrying major long-term commitments to Manny Machado, Fernando Tatis Jr., Xander Bogaerts, Jackson Merrill and Jake Cronenworth. However, every raise reduces the room available for a starting pitcher, another bat or the depth this organization is so often forced to assemble on the fly.

A long-term extension would buy cost certainty but demand another major commitment from ownership. Continuing year to year preserves flexibility while allowing Miller’s arbitration price to rise. Trading him would reopen the prospect-cost debate and send a terrible message unless the return solved several major-league problems at once.

For now, paying him is the obvious move.

Padres’ other projected arbitration salaries for 2027

Miller owns the largest number in San Diego’s eight-player arbitration class, which projects to cost a combined $24.6 million. That’s the group’s projected total salary, not $24.6 million in new spending.

The full MLB Trade Rumors projection also includes:

• Gavin Sheets: $6.5 million
• JP Sears: $2.8 million
• Freddy Fermin: $2.6 million
• Luis Campusano: $1.7 million
• Jeremiah Estrada: $1.3 million
• Bryan Hoeing: $800,000
• Jhony Brito: $800,000

Most of those numbers are manageable. Together, they create another meaningful chunk of payroll before the Padres address their free agents and outside needs.

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