Sri Lankan, Lasith Malinga achieved a feat never achieved before in the game of Cricket. 
He took four wickets in four balls in Sri Lanka’s game against South Africa today. Not surprisingly, this has turned out to be the best game in the ongoing world cup so far.
Savour the following description of the feat from a Cricinfo report
An extraordinary spell of fast bowling from Lasith Malinga, where he strung together a devastating sequence of four wickets in four balls, threatened to produce the greatest one-day heist before South Africa scrambled to a dramatic one-wicket victory in a heart-stopping Super Eights clash in Guyana.
South Africa needed a meagre four runs to win with five wickets in hand when Malinga finished batsmen as if swatting flies. He fooled Shaun Pollock with a beauty of a slower ball before hurrying Andrew Hall with a juddering yorker that looped up to cover. The first ball of the next over produced the hat-trick, the fifth in World Cups, when the set Jacques Kallis nicked to the wicketkeeper before a brute of a yorker zoomed past Makhaya Ntini.
Malinga’s burst overshadowed the first five-wicket haul of the tournament - Langeveldt’s 5 for 39 which restricted Sri Lanka to 209.
Malinga’s feat is probably even more difficult to achieve than the six sixes that Herschelle Gibbs delivered against Holland.
Congratulations all around are in order.
Update : Here’s the video of the feat. It’s slightly long (over 5 mins), but worth watching every bit of it.