By Alex Trickett BBC Sport Online

The Open has thrown up some unlikely winners. BBC Sport Online's remembers four outsiders who won the Claret Jug.

1999 - Paul Lawrie

That Scottish qualifier, Paul Lawrie, was even in contention on the final day of the 128th Open Championship at Carnoustie, came as a considerable surprise.

He had battled through final qualification prior to the tournament and was not favoured to become the first home-based Scot to win it since Willie Auchterlonie 106 years before.

Lawrie: Qualifier turns champion

But win it he did, in the most remarkable of circumstances.

Trailing surprise-leader, Jean Van de Velde, Lawrie fired a closing round of 67 to apply some pressure on the Frenchman.

And Van de Velde, who needed only a six at the last hole, conspired to take a seven, flirting with a grandstand and the Barry Burn along the way.

American Justin Leonard joined the pair in a play-off, but Lawrie asserted himself with a birdie on the 17th and took the title after a superb 220-yard four iron to the 18th.

1989 - Mark Calcavecchia

American golfers were strangely subdued at The Open in the years leading up to the 1989 tournament at Royal Troon.

Not since Tom Watson in 1983 had the USA boasted a winner and few would have picked Mark Calcavecchia as the man to break that duck.

Calcavecchia leads an American charge in 1989

But three consecutive 68s in rounds two, three and four earned him a play-off against a pair of Australians, Greg Norman and Wayne Grady.

Norman, one of the best players of the decade, was tipped to prevail, having fought his way back into contention with a scintillating, eight-under-par final round of 64.

And he started the four-hole decider with two birdies, before finding trouble on the 17th.

Then on the 18th, with Norman alternating between bunkers and going out-of-bounds, Calcavecchia nailed a birdie to secure his only Major to date.

1963 - Bob Charles

What is perhaps most surprising about Bob Charles' feat at The Open of 1963, is that it has never been equalled.

Bob Charles: Left-hander supreme

To this day, and despite the best endeavours of American pretender, Phil Mickelson, Charles remains the only left-hander to win one of golf's four Majors.

As if staying ahead of the likes of Arnold Palmer and Jack Nicklaus over 72 holes was not difficult enough, the New Zealander had then to come back the next day to face Phil Rodgers in a 36-hole play-off.

He prevailed with a score of 140, eight less than Rodgers, and secured his place in golfing history.

1960 - Kel Nagle

Palmer was a firm favourite to win the 100th Open at St Andrews and brought with him a boisterous and bourgeoning army of supporters.

Arnie and his army were thwarted twice in the 60s

Australia's Kel Nagle was a 30-1 shot, backed by former-champion and compatriot, Peter Thompson, but few others.

By Sunday, the two players - unlikely opposites in many ways - were locked in a fascinating duel for the Claret Jug.

Nagle matched Palmer stroke for stroke and held his nerve to deny the American his third Major of the year.