The number four holds huge significance to Australia in World Cup history, it being their total title tally to date.
Co-hosts with New Zealand in thie edition, home advantage means that they are rightfully dreaming of a fifth crown.
The Kangaroos first won the tournament back in 1987 in their fourth campaign. West Indies won the first two in 1975 and 1979, while India lifted the trophy four years later to break the Caribbean team's stranglehold.
Twelve years separated Australia's first and second World Cup wins, with Steve Waugh leading his country to glory in 1999 and ushering in an era of dominance for the Aussies.
Two more trophies followed under the leadership of Ricky Ponting in 2003 and 2007 to complete an unprecedented hat-trick of world cups.
Another man who has fond memories of the number four is Sri Lanka quick Lasith Malinga, who is the only bowler in World Cup history to take four wickets in four deliveries. His efforts against South Africa nearly won his team the match in what would have the most remarkable comebacks of all time, but it wasn't to be for the slingy death specialist.
SPORT 360's CRICKET WORLD CUP COUNTDOWN
– 5 days to go:Ricky Ponting rocks the biggest stage
– 6 days to go: Tendulkar and Miandad's immortal sextuplet
– 7 days to go: Taylor sends Shoaib Akhtar off in style
– 8 days to go: Zimbabwe's record eight-wicket stand
– 9 days to go: Crazy nines from World Cup minnows
– 10 days to go: Chris Old's record still new
– 11 days to go: Viv Richards wins it for West Indies
– 12 days to go: The support from outside the rope
– 13 days to go: O'Brien storm blows England away
– 14 days to go: Arvinda de Silva in world of his own
– 15 days to go: Australia bamboozle the Namibians
– 16 days to go: New format catches out India, Pakistan
– 17 days to go: Madan Lal’s 17 wickets help India to triumph
– 18 days to go: Dennis delight at first World Cup century
– 19 days to go: Economical Imran Khan of Pakistan
– 20 days to go: Bichel cleans up against England
– 21 days to go: Sachin Tendulkar the runs machine
– 22 days to go: The unwanted record of Nathan Astle
– 23 days to go: Nehra rattles England in South Africa
– 24 days to go: The great Kapil Dev's strike rate for India
– 25 days to go: Australia's Invincibles dominate for eight
– 26 days to go: Glenn McGrath's wicket-taking exploits
– 27 days to go: Zaheer Khan's striking ability
– 28 days to go: Herschelle Gibbs just loves sixes
– 29 days to go: Australia's 29-ball haul destroys India
