Complex sentence: The rivalry with Victoria stems from before State of Origin started, the Victorian Football League bring the richest league, used to buy a lot of the best players from interstate, and the VFL had a rule that all players must play Victoria.
Split into simpler sentences: The rivalry with Victoria stems from before State of Origin started. The Victorian Football League bring the richest league, used to buy a lot of the best players from interstate, and the VFL had a rule that all players must play Victoria.