Maciejewski split the 2019 season between Staten Island, the Single–A Charleston RiverDogs, High–A Tampa Tarpons, and Triple–A Scranton/Wilkes-Barre RailRiders. In 14 games (12 starts) split between the four affiliates, he accumulated a 4–5 record and 2.33 ERA with 54 strikeouts across 73+1⁄3 innings pitched. Maciejewski did not play in a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic.[3]
He returned to action in 2021, making 22 appearances (17 starts) split between Scranton and the High–A Hudson Valley Renegades, in which he pitched to a 9–6 record and 4.53 ERA with 105 strikeouts across 101+1⁄3 innings pitched.[4] In 2022, the Yankees transitioned Maciejewski from a starting pitcher to a relief pitcher. He spent the year primarily with the Double–A Somerset Patriots, and compiled a 2.88 ERA with 48 strikeouts in 14 games for the team.[5]
Maciejewski split the 2023 campaign between High–A Hudson Valley, Double–A Somerset, and Triple–A Scranton. In 30 appearances out of the bullpen, he combined for a 6–3 record and 2.96 ERA with 46 strikeouts across 45+2⁄3 innings of work.[6]
On April 8, 2024, Maciejewski was selected to the 40-man roster and promoted to the major leagues for the first time.[7] He made his debut that night, recording three outs on just four pitches.[8] On April 13, Maciejewski was designated for assignment.[9] Maciejewski cleared waivers and was sent outright to Triple–A on April 16.[10] On June 30, the Yankees purchased Maciejewski's contract, adding him back to the major league roster.[11] In 4 appearances for the Yankees, he logged a 2.57 ERA with 7 strikeouts over 7 innings. On September 1, the Yankees designated Maciejewski for assignment.[12] He cleared waivers and was sent outright to Scranton on September 6.[13] Maciejewski elected free agency on October 31.[14]
Milwaukee Brewers
On January 31, 2025, Maciejewski signed a minor league contract with the Milwaukee Brewers.[15] He made 35 appearances (six starts) for the Double-A Biloxi Shuckers and Triple-A Nashville Sounds, accumulating a 5-5 record and 5.30 ERA with 66 strikeouts across 69+2⁄3 innings pitched. Maciejewski elected free agency following the season on November 6.[16][17]
