[1][2] Kochanowicz 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 made his professional debut in 2021 with the Single–A Inland Empire 66ers, logging a 4–2 record and 6.91 ERA with 73 strikeouts across 20 games (18 starts).

[4] Kochanowicz returned to Inland Empire in 2022, compiling a 4–4 record and 4.99 ERA with 53 strikeouts over 17 appearances (9 starts).

[5] He split the 2023 campaign between the High–A Tri-City Dust Devils and Double–A Rocket City Trash Pandas.

In 21 starts between the two affiliates, Kochanowicz accumulated a 5–5 record and 5.27 ERA with 69 strikeouts across 94 innings pitched.