[6] His family later moved to Darwin, where he would play 12 months a year of football for Nightcliff Tigers in conditions different to anything he had experienced before.

[11] Labelled as the 'best pure midfielder in the draft', Walsh also played in the NAB Under 18 Championships, where he represented Vic Country as captain.

[19] Walsh earned an AFL Rising Star nomination in Round 4, following Carlton's two point loss to Gold Coast, after collecting 28 possessions (13 contested), seven clearances, six tackles and a goal.

After a promising season in 2020, which culminated in his finishing second in the Carlton Best and Fairest, Walsh exploded in season 2021, garnering his maiden All Australian selection, his first John Nicholls Medal as the Carlton Football Club Best and Fairest, and finishing fourth in the Brownlow Medal.

In 2020, despite having only had a short career at that point, he was named in the St Joseph’s College team of champions, recognising the best VFL/AFL players to have attended the school.