Played during the final year of World War I, eight of the league's nine senior clubs competed, an increase of two from the previous year with only Melbourne absent. The season ran from 11 May until 7 September, and comprised a 14-game home-and-away season followed by a finals series featuring the top four clubs.
In 1918, the VFL competition consisted of eight teams of 18 on-the-field players each, with no "reserves", although any of the 18 players who had left the playing field for any reason could later resume their place on the field at any time during the match.
Each team played each other twice in a home-and-away season of 14 rounds.
Once the 14 round home-and-away season had finished, the 1918 VFL Premiers were determined by the specific format and conventions of the amended "Argus system".
Rules for classification: 1. premiership points; 2. percentage; 3. points for Average score: 56.4 Source: AFL Tables
Finals series
All of the 1918 finals were played at the MCG so the home team in the semi-finals and preliminary final is purely the higher ranked team from the ladder but in the Grand Final the home team was the team that won the preliminary final.
The second semi-final was scheduled to be played on the 24th of August, but heavy rain caused a postponement to the 31st of August — the first postponement of a finals match in VFL history.[1][2]
Essendon and St Kilda re-entered the VFL competition. The Essendon players met their own expenses and played as amateurs, with the club donating all of its 1918 profits (which amounted to £194-19-8) to "patriotic and charitable purposes".
In Round 2, Richmond recorded its first VFL win over Carlton after 23 consecutive losses, a losing streak dating back to Richmond's entry into the VFL in 1908.
Maplestone, M., Flying Higher: History of the Essendon Football Club 1872–1996, Essendon Football Club, (Melbourne), 1996. ISBN0-9591740-2-8
Rogers, S. & Brown, A., Every Game Ever Played: VFL/AFL Results 1897–1997 (Sixth Edition), Viking Books, (Ringwood), 1998. ISBN0-670-90809-6
Ross, J. (ed), 100 Years of Australian Football 1897–1996: The Complete Story of the AFL, All the Big Stories, All the Great Pictures, All the Champions, Every AFL Season Reported, Viking, (Ringwood), 1996. ISBN0-670-86814-0