Koch played college baseball at Arkansas from 2016 to 2018.[1]
Koch was drafted by the Pittsburgh Pirates in the 5th round, with the 144th overall selection, of the 2018 Major League Baseball draft, and signed for a $364,600 signing bonus.[2] He made his professional debut with the Low–A West Virginia Black Bears, hitting .188/.304/.263 with two home runs and 11 RBI over 40 contests.[3]
Koch spent 2019 with the Single–A Greensboro Grasshoppers, playing in 94 games and batting .202/.274/.318 with eight home runs and 34 RBI.[4] He did not play in a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic.[5] Koch returned to action in 2021 with Greensboro and the Double–A Altoona Curve, accumulating a .178/.259/.348 slash line with 10 home runs and 36 RBI across 70 games.[6]
Koch split the 2022 campaign between Altoona and the Single–A Bradenton Marauders. In 32 total games, he hit a combined .202/.327/.255 with one home run and eight RBI.[7] Koch spent the 2023 season with the Triple–A Indianapolis Indians, hitting .255/.318/.391 with five home runs and 23 RBI.[8]
Koch began the 2024 season with the Triple–A Indianapolis Indians, hitting .167/.211/.259 with one home run and five RBI across 17 games. On May 28, 2024, Koch was selected to the 40-man roster and promoted to the major leagues for the first time.[9] In three games for the Pirates, he went 0–for–7 with one walk. On June 4, Koch was designated for assignment by Pittsburgh.[10] He cleared waivers and was sent outright to Indianapolis on June 6.[11] Koch elected free agency following the season on November 4.[12]
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