From Heyfield in country Victoria, Eastham played every one of the Gold Coast Suns' 18 VFL matches in his first season, mostly in an unfamiliar defensive role, and averaged 15.6 disposals and 5.2 marks. A season-best 25 touches and eight marks against Richmond earned him a second year on the rookie list. Gold Coast delisted him at the end of the 2026 season. He is yet to play a senior AFL game.