Amateur Barnett attended
Cartersville High School in
Cartersville, Georgia, and
Auburn University, where he played
college baseball for the
Auburn Tigers. In 2021, he played
collegiate summer baseball with the
Brewster Whitecaps of the
Cape Cod Baseball League.
Kansas City Royals The
Kansas City Royals selected Barnett in the third round of the
2022 Major League Baseball draft. He signed with the Royals and spent his first professional season with the rookie-level
Arizona Complex League Royals and Single-A
Columbia Fireflies. Barnett started 2023 with the High-A
Quad Cities River Bandits before his promotion to the Double-A
Northwest Arkansas Naturals.
Oakland Athletics / Athletics On July 30, 2024, Barnett,
Will Klein, and Jared Dickey were acquired by the
Oakland Athletics in exchange for
Lucas Erceg. He made seven starts down the stretch for the Double-A
Midland RockHounds, posting a 4-2 record and 2.61 ERA with 52 strikeouts across innings pitched. Barnett began the 2025 season with the Triple-A
Las Vegas Aviators, compiling a 6-2 record and 6.13 ERA with 124 strikeouts over 119 innings of work. On August 26, 2025, Barnett was selected to the
40-man roster and promoted to the major leagues for the first time. On September 5, Barnett recorded his first career win, allowing four runs and striking out eight across five innings pitched against the
Los Angeles Angels. Barnett was optioned to Triple-A Las Vegas to begin the 2026 season. ==References==