Here is a look at the result of the first game for Australia at every Cricket World Cup since 1975.
1975- Australia 278/7 beat Pakistan 205 all out (Headingly)
1979- Australia 159/9 lost to England 160/4 (Lords)
1983- Zimbabwe 239/6 beat Australia 226/7 (Trent Bridge)
1987- Australia 270/6 beat India 269 all out (Chennai)
1992- New Zealand 248/6 beat Australia 211 all out (Auckland)
1996- Australia lost to Sri Lanka by Forfeiture ( Colombo)
1999- Scotland 181/7 lost to Australia 182/4 (New Road, Worcester)
2003- Australia 310/8 beat Pakistan 228 all out ( Wanderers Stadium, Johannesburg)
2007- Australia 334/6 beat Scotland 131 all out (Warner Park Stadium, Basseterre)
2011- Australia 262/6 beat Zimbabwe 171 all out (Sardar Patel Stadium, Ahmedabad)
2015- Australia 342/9 beat England 231 all out (Melbourne Cricket Ground, Melbourne)
2019- Sri Lanka 239/8 lost to Australia 241/5 (Rose Bowl, Southampton)