Adelaide after they defeated South Adelaide in the Grand Final a week later. Port Adelaide offered to play North Adelaide after the conclusion of the season, but the SAFA refused to allow it. Port Adelaide won the premiership the following year. In the early 1910s, Port Adelaide became a consistent premiership contender, setting up the club to win three more Championships of Australia. Port Adelaide won the South Australian Football League (SAFL) premiership in 1910 defeating Sturt 8.12 (60) to 5.11 (41) in the Grand Final. The club would go on to defeat Collingwood for the 1910 Championship of Australia title, and Western Australian Football League (WAFL) premiers East Fremantle in an exhibition match. They also defeated a combination of some of the WAFL's best players in another match. Although Port Adelaide had success in the minor rounds the following two seasons, dropping only one game in 1911 and going undefeated in 1912, it was knocked out of contention by West Adelaide both times. The club won the SAFL premiership in 1913, dropping only two games during the minor round and defeating North Adelaide in the Grand Final. They also defeated Fitzroy for the 1913 Championship of Australia. The 1914 Port Adelaide Football Club season is unique in SANFL history, being the only occasion in which a team has gone undefeated. The club won all its pre-season matches, won all fourteen SAFL games and the 1914 SAFL Grand Final where it held North Adelaide to a single goal for the match 13.15 (93) to 1.8 (14). It also became the first to score over 1000 points during the minor round. The club met Victorian Football League (VFL) premiers Carlton in the Championship of Australia, defeating them by 34 points to claim a record fourth title. At the end of the 1914 season, a combined team from the six other SAFL clubs played Port Adelaide and lost to the subsequently-dubbed "Invincibles" by 58 points. 1916–1949: Two World Wars and the Great Depression Port Adelaide's early-century success was hindered by World War I. During the war, the club lost three players as casualties. A scaled-back competition referred to as the 'Patriotic League' was organised during wartime in which Port Adelaide won the 1916 and 1917 instalments. Port Adelaide initially struggled to replicate its past success after the war. After eventually winning the 1921 premiership under the captaincy of Harold Oliver, many of