Bouba Diop gets Senegal's winner (Allsport).

America's 3-2 victory against well-fancied Portugal on Wednesday will go down in history as one of the greatest ever World Cup shocks.

Incredibly they led 3-1 at half-time thanks to goals from John O'Brien, an own goal from Jorge Costa, and Brian McBride, with Beto giving their opponents hope.

Jeff Agoos' second-half own goal set the American nerves jangling, but they hung on for a famous World Cup victory and Antonio Oliveira's men were condemned to join the likes of France, Argentina, Italy and England as victims of stunning results on the greatest stage of all.

Here we examine seven of the biggest World Cup shocks.

USA 1 England 0, Brazil 1950

The most humiliating defeat in England's history.

The tournament favourites dominated to start with but in the 37th minute the US stunned them by taking the lead through Larry Gaetjens. Walter Winterbottom's side could not hit back and were forced to accept a hugely embarrassing defeat.

North Korea 1 Italy 0, England 1966

Arguably the most surprising World Cup scoreline ever.

Italy were expected to thump the Asian minnows but, against all the odds, the Koreans' defence held firm against the might of the Europeans.

The now legendary Pak Doo Ik was on hand to score a scarcely believable winner.

Scotland 3 Holland 2, Argentina 1978

Holland's celebrated 'total football' side were in their prime, brimming with confidence and fully expected to dish out a real stuffing to the Scots. However, Archie Gemmill had other ideas and fired a superb brace, and with Kenny Dalglish also popping up to score, the Dutch were defeated.

Cameroon 1 Argentina 0, Italy 1990

Cameroon, reduced to nine men after a double sending off, produced another strong candidate for the biggest ever World Cup shock against the reigning champions.

In only Cameroon's second appearance in the finals, they stunned the South Americans and stole the hearts of supporters when Omam Biyik headed home the winner.

Costa Rica 1 Scotland 0, Italy 1990

Another of the catalogue of embarrassing results in Scotland's history. Juan Cayasso condemned the Scots to one of their darkest days with the only goal.

Scotland turned in a dreadful performance and set the wheels in motion for another first round exit.

Republic of Ireland 1 Italy 0, USA 1994

Even Ireland's jolly green travelling army could surely not have believed their side would defeat the mighty Italy.

But Jack Charlton's men did exactly that, thanks to Ray Houghton's brilliant 25-yard strike that screamed into the net.

The Irish defence kept the Italian strikeforce at bay as Charlton's men sent their supporters into ecstasy.

France 0 Senegal 1, Japan and South Korea 2002

The World and European champions were left stunned in their opening game of this year's tournament through a goal from El Hadji Diouf.

France went close and hit the woodwork twice, but the African nation held on for a magical victory.