https://www.canberratimes.com.au/sp...s-in-all-games-next-year-20180605-p4zjka.html
The AFL is open to the idea of having four field umpires in all games next year, having announced that it will trial four umpires during rounds 13 and 14.
The AFL's general manager of football, Steve Hocking, said four umpires would not be introduced full-time this season, but it was on the agenda for consideration in 2019. "In the future, yes,'' said Hocking, when asked if the four umpires could become the norm. "Not in this season, no.''