19 teams is an awkward number
Tasmania enters in 2028 and makes nineteen. Every round then has a team sitting out. A twentieth squares the fixture and creates a tenth game to sell each week. That is why Andrew Demetriou names 2032, the year the next broadcast rights are negotiated, as the target.
Source: Where ex-AFL CEO is pushing for 20th team to join in 2032 — SEN

