Five talking-points from first day of 2015 ICC World Cup

New Delhi: On Valentine's Day, hosts nations Australia and New Zealand showed no love to their opponents, and registered convincing wins against England and Sri Lanka respectively.

Here are the five talking-points from the first day of 2015 ICC World Cup:

Rain threat: In cricket, threat of rain is always there. At the start of the 11th edition of Cricket World Cup got delayed after a light shower at the Hagley Oval. Despite the threat and eight minute delay, the match between hosts New Zealand and Sri Lanka completed without any reduction in overs.

Century on debut: Aaron Finch on Saturday joined the likes of Trevor Chappell, Geoff Marsh and Andrew Symonds to score a hundred on World Cup debut. The Australian opener's blistering 126-ball innings, laced with 12 fours and three sixes, helped the hosts post a mammoth 342 runs against a listless English side. It's also the first century of 2015 ICC World Cup.

Family double: Mitchell Marsh, playing his first World Cup match, showed true-class in Australia's convincing win over traditional rivals England. He first scored 23 quick runs, then returned to take five English wickets. Remarkably, his father Geoff, scored a hundred on World Cup debut too in 1987 against India in Chennai.

Hat-trick: In an otherwise gloomy day for England, Steven Finn achieved a rare feat by taking a hat-trick off the last three balls of Australian innings. The right-arm fast-medium bowler took the wickets of Brad Haddin, Glenn Maxwell and Mitchell Johnson to become England's first bowler to take a hat-trick at a World Cup. He is just the seventh player to do so.

Dead-ball and umpire error: Everything went wrong for England at Melbourne Cricket Ground on Saturday. Firstly, they dropped Finch on nought by Chris Woakes off James Anderson's bowling in the very first over of the match. That was then followed up with a lacklustre bowling effort. However, the worst part of the game was when the match officials ruled Anderson run out of a dead-ball, thus leaving James Taylor stranded at 98 not out.