Athletics trade Mason Miller and J.P. Sears to Padres for four players originally appeared on NBC Sports Boston

The Athletics shook up their roster in a major way on Thursday.

The Green and Gold traded star closer Mason Miller and starting pitcher J.P. Sears to the San Diego Padres for shortstop prospect Leodalis De Vries, the No. 3 prospect in baseball, and right-handed pitchers Braden Nett, Henry Báez and Eduarniel Nuñez, the team announced after ESPN’s Jeff Passan first reported the news.

The 26-year-old Miller was an MLB All-Star for the Athletics in 2024, and in 38 games this season, posted a 3.76 ERA with 59 strikeouts, 18 walks and 20 saves in 38 1/3 innings pitched.

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Sears, the Athletics’ staff ace, posted a 4.95 ERA with 97 strikeouts to 29 walks in 111 innings pitched this season.

While both pitchers certainly were beloved by fans and within the organization, it appears the A’s got a haul from the Padres.

As mentioned, De Vries is the third-best prospect in all of baseball, per MLB.com, and in 82 games at the High-A level, the 18-year-old shortstop is batting .245/.357/.410 with eight home runs, 46 RBI and eight stolen bases with a .767 OPS in 368 plate appearances.

Nett, a 23-year-old starting pitcher, is San Diego’s No. 3 prospect, and in 17 starts at the Double-A level, posted a 3.39 ERA with 86 strikeouts to 34 walks in 74 1/3 innings pitched.

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Báez, a 22-year-old starting pitcher, is San Diego’s No. 13 prospect, and in 20 starts at the Double-A level, posted a very impressive 1.96 ERA with 89 strikeouts and 31 walks in 96 2/3 innings pitched.

Finally, Nuñez, a 26-year-old relief pitcher and San Diego’s No. 17 prospect, posted a 2.83 ERA with 56 strikeouts and 17 walks in 35 innings pitched across the Double- and Triple-A levels this season while surrendering two earned runs in 4 2/3 innings of work at the major-league level.