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.[6]
On November 13, 2023, the Angels added Kochanowicz to their 40-man roster to protect him from the Rule 5 draft.[7][8] He was optioned to the Triple–A Salt Lake Bees to begin the 2024 season.[9] On July 11, 2024, Kochanowicz was promoted to the major leagues for the first time.[10] He threw three innings, yielded five runs on seven hits, hit two batters with pitches, and took a loss against the Seattle Mariners.[11] Kochanowicz earned his first career victory against the Washington Nationals on August 11.[12][13]
