The continuance of World War I after the 1914–15 season causes the suspension of top-class football until 1919, with many footballers signing up to fight for their country. The FA Cup and Football League are not contested again until after the end of the war, although regional leagues and cups are set up at various times.
26 June: By drawing 4.8 (32) each with Port Adelaide, South Adelaide end the Magpies’ run of 29 consecutive victories, including one against Carlton and one against a combined team from the other six SAFL clubs.[2]
25 September: Sturt win their first SAFL premiership, beating Port Adelaide 6.10 (46) to 4.10 (34) in the 1915 SAFL Grand Final.
5 April — Jess Willard, the latest "Great White Hope", defeats Jack Johnson with a 26th-round knockout in sweltering heat at Havana, Cuba. Willard becomes very popular among white Americans for "bringing back the championship to the white race".[3]
While six world titles remain unchanged in 1915, the World Welterweight Championship changes hands three times in less than three months between June and August. Finally, it comes to Ted "Kid" Lewis, who defeats Jack Britton twice to win and then retain the title, which will interchange between these two over the next four years.
Because of World War I, there is no first-class cricket in South Africa in the 1914–15 season, nor in England in 1915. Australia goes ahead with the 1914–15 Sheffield Shield competition but then suspends first-class cricket until 1919. Similarly, in New Zealand, the Plunket Shield is contested but then there is no first-class cricket until 1918. Only in India is first-class cricket able to continue through the war years.
Huddersfield becomes the second team to achieve the celebrated "All Four Cups" feat. Huddersfield at this time is known as the "Team of all the Talents".
The continuance of World War I after the 1914–15 season causes the suspension of top-class rugby league until 1919.
