Henrik Stenson's win over Vaughn Taylor clinched the Ryder Cup for Europe and they ended with an 18½-9½ triumph.
Luke Donald saw off Chad Campbell and David Howell outclassed Brett Wetterich to set Stenson up for his moment.
Earlier, Paul Casey defeated world number three Jim Furyk and Colin Montgomerie edged past David Toms.
Stewart Cink hammered Sergio Garcia, Tiger Woods beat Robert Karlsson and Scott Verplank got a hole-in-one but the Americans were well beaten.
Ryder Cup - Sunday's singles:
Colin Montgomerie v David Toms (Europe won 1up)
Scot Montgomerie produced some superb iron shots to see off the American 1-up - as he did in 2004 at Oakland Hills.
Majestic approaches to the third and fourth holes gave him birdies, although he bogeyed the fifth to be only one up.
Montgomerie almost went into the water at 11 but survived to go two up at 15 and although Toms pulled one back, a fantastic bunker shot at 18 sealed it.
Sergio Garcia v Stewart Cink (USA won 4&3)
Spaniard Garcia had won six straight matches - including four this year - but could not rediscover that form.
Cink made four birdies in the first five holes and Garcia went into the water at the seventh to go five down.
The American also found water and Garcia made a birdie to cut the deficit to three but Cink landed a 50ft birdie at the 12th and held on to secure a crushing win.
Paul Casey v Jim Furyk (Europe won 2&1)
With Furyk struggling on the greens, Casey made four birdies on the front nine to turn around four holes up.
The American pulled one back with a birdie at the 11th and produced a brave putt on 14 to keep his hopes alive.
An astonishing putt on 16 secured an eagle for Furyk but Casey holed a 20ft effort on 17 to end any doubts and secure a famous victory for the Englishman.
Robert Karlsson v Tiger Woods (USA won 3&2)
Woods prevailed despite his caddie Steve Williams losing his nine-iron.
The world number one asked for the club to be cleaned near the seventh green by Williams, who stumbled on a rock and dropped it into a lake.
The American star, playing his best golf of the three days, brushed it off and birdied the ninth to go two holes clear.
He had two in a bunker on the long 10th, however, and Karlsson remained only one behind when the next was halved in birdies.
The following three were shared as well, but the Swede drove into the lake on the 15th and put his second in the river at the 16th.
Luke Donald v Chad Campbell (Europe won 2&1)
There was nothing to choose between the pair over the front nine, with every hole halved in pars.
But Donald came alive on the back nine as he grabbed a three-hole lead thanks to birdies at the 11th and 13th.
Campbell hit back with birdies of his own at the 15th and 16th, but Donald held his nerve at the 17th.
Paul McGinley v JJ Henry (match halved)
McGinley was two up when Henry bogeyed the second and he made a birdie on the third but the Irishman missed a 12-footer on nine and Henry birdied 10.
The American took the lead on 11 but dropped a shot on the 13th before the pair steadied to make four pars each.
McGinley could have won on the 18th but with Europe celebrating victory, sportingly agreed a half with Henry 15 feet away.
Darren Clarke v Zach Johnson (Europe won 3&2)
It was the third win out of three for Clarke, playing in only his second tournament since the death of his wife Heather from cancer last month.
Europe had already sealed a record third consecutive victory, when Clarke holed his final putt on the 16th.
The wildcard was embraced by captain Ian Woosnam to raucous cheers and broke down in tears.
Henrik Stenson v Vaughn Taylor (Europe won 4&3)
Stenson rolled in a seven-foot putt at the 15th to halve the hole and ensure Ryder Cup victory for Europe.
Taylor birdied the first to take a one-up lead, but that was as good as it got for the American rookie.
Stenson turned on the style to make five birdies from the sixth to the 14th and stride away with a comfortable - and hugely significant - win.
David Howell v Brett Wetterich (Europe won 5&4)
Wetterich, who had lost in his only other match at the K Club this week, was simply outclassed and was always up against it after Howell birdied the fourth hole to go ahead.
The Englishman chipped in at 11, holed from 20 feet and grabbed a third straight birdie at 13 to take control.
Victory was clinched at the next hole when another excellent tee shot landed 15 feet away and the chance was taken.
Jose Maria Olazabal v Phil Mickelson (Europe won 2&1)
Spaniard Olazabal capped a fine week with victory, claiming an early lead with birdies at the third and fourth to edge him one up on the US Masters champion.
Mickelson drew level on the fifth with a birdie but then ran up a double bogey on the next.
Olazabal birdied the 12th after Mickelson had found water off the tee. Par was good enough from then on for the European's third win from three.
Lee Westwood v Chris DiMarco (Europe win 2 up)
Westwood, struggling with the effects of a high temperature, laid down an early marker by winning the first two holes.
DiMarco had no answer as Westwood went from strength to strength, birdieing three of the next five holes.
Birdies at the 12th, 13th and 16th from DiMarco made a match of it, but Westwood's blitz was enough to end the week on a winning European note.
Padraig Harrington v Scott Verplank (USA win 4&3)
Harrington never got going and was two down at the turn with his American opponent making three birdies.
The Irishman's disappointing afternoon continued with a bogey at the 12th, before Verplank got a stunning hole-in-one at the 213-yard 14th.
That all but finished off Harrington, who joined up with his celebrating team-mates after the next was halved when a streaker interrupted the action.