Johnson did not play any games for Collingwood in his first season. In 2022, he played his debut game in Round 18 against the Adelaide Crows in a 5-point victory. Johnson kicked his first two goals of his career in his debut game.[3] Johnson played every game after his debut game in 2022 for Collingwood. Ash Johnson played his first game of 2023 in Round 3.[citation needed]
After being nominated in Round 10, 2023, for Mark of the Year against Carlton,[4][5][6] Johnson's form started to lapse.[citation needed] He returned to the side late in the year but did not get selected for any of Collingwood's three finals, as they went on to win the 2023 AFL Grand Final.[citation needed]