John McMillon

After going undrafted in the 2020 MLB draft, McMillon signed with the Kansas City Royals on June 23, 2020.^[3] He made his professional debut in 2021 with Single-A Columbia, later being promoted to the High-A Quad Cities River Bandits. After posting a 2.70 ERA in 13 games, he was again promoted to the Double-A Northwest Arkansas Naturals, where he logged a stellar 0.87 ERA with 30 strikeouts and 5 saves in 20+2⁄3 innings pitched.^[4]

On August 16, 2023, McMillon was selected to the 40-man roster and promoted to the major leagues for the first time.^[5] On August 30, the Royals placed McMillon on the 15-day injured list with a strained right forearm.^[6]

McMillon was optioned to the Triple-A Omaha Storm Chasers to begin the 2024 season.^[7] In 28 appearances for Omaha, he struggled to a 6.53 ERA with 35 strikeouts across 30+1⁄3 innings pitched. McMillon was designated for assignment by the Royals on July 30, 2024.^[8]

On August 2, 2024, McMillon was claimed off waivers by the Miami Marlins.^[9] In 10 appearances for the Marlins, he compiled a 2–1 record and 1.50 ERA with 13 strikeouts across 12 innings pitched. His season ended on September 12, when he was placed on the injured list with elbow tightness.^[10]

On November 4, 2024, McMillon was claimed off waivers by the Philadelphia Phillies.^[11] On November 19, he was removed from the 40-man roster and sent outright to the Triple-A Lehigh Valley IronPigs.^[12]

• Career statistics from MLB · ESPN · Baseball Reference · Fangraphs · Baseball Reference (Minors) · Retrosheet · Baseball Almanac