Pakistan - 2007, West Indies

On a green pitch in Sabina Park, Ireland dismissed Pakistan for 132 after putting them in to bat. They didn't have an easy time either with the bat but managed to chase down the target with three wickets remaining to celebrate St Patrick's Day in style. The loss put Pakistan out of the World Cup and later in the night they also lost coach Bob Woolmer to a fatal heart attack.

Bangladesh - 2007, West Indies

Another full member fell prey to the Irish in the 2007 edition when Bangladesh lost in Bridgetown,
Barbados by a huge 74 runs. Batting first, Ireland made 243-7 in the Super Eight match, riding on a fine 85 from current captain William Porterfield, and then bundled
out Bangladesh for 169 in the 42nd over. Bangladesh had earlier ousted India from the event.

England - 2011, India

England would have never imagined what lied ahead when they scored 327-8 batting first in Bangalore and then reduced Ireland to 111-5 in the 25th over. The drama unfolded from there on as Kevin O'Brien walked in to play one of one-day cricket's most sensational knocks -- 113 off 63 deliveries -- before being run out. Ireland didn't panic in the nerve-wracking match and pulled off a great victory.

West Indies - 2015, New Zealand

Very few would call it an upset but the ease with which they chased down a target of 304 would have surprised most. The Irish reduced West Indies to 87-5 after opting to field first but the Caribbean side managed a brilliant recovery through a 154-run stand for the sixth wicket. Ireland got past the target with 25 balls to spare and four wickets intact.