Yahoo Sport 
Sport: Heroes - just for one day: Winners whose star shone just the once...
Yahoo Sport looks at seven people who hit the headlines but who never managed to add to their 15 minutes of fame
Mark De Mori has been put forward as a bit of cannon fodder for David Haye this evening.
The uniquely-haired Australian/Croatian hybrid is not expected to last much more than a couple of rounds against former world champion Haye – but if he wins, he will join the list of apparent sporting no-hopers to hit the headlines.
He will become a hero – just for one day - like many before him - and here are a few more...
James Buster Douglas
In February 1990, Buster did what was thought impossible – he beat Mike Tyson. Lined up as another punchbag for the champion, Douglas knocked Iron Mike out in the 10th round. Later that year, in his first defence, Douglas was knocked out in the third by Evander Holyfield, and promptly retired.
Leon Spinks
An Olympic gold medalist – albeit at a lighter weight – nobody really fancied Leon Spinks to test world heavyweight champion Muhammad Ali – let alone beat him. But in February 1978, he stunned the sport by becoming the only man to take a title from Ali in the ring.`
Later that year, Spinks was dominated by Ali in the rematch and the career slide had begun…
Gary Pratt
The little-known Durham player hit the headlines for England in the 2005 Ashes when, on the pitch as 12th man for injured bowler Simon Jone in the Fourth Test, he ran out Australia skipper Ricky Ponting at Trent Bridge. Ponting mouthed his fury at the England camp as England went on to win the match – and the series.
Keith Deller
Became world darts champion in 1983 when all the best players competed for one title. In what is regarded as the biggest upset in the history of the sport, Deller beat Eric Bristow 6-5 after the Crafty Cockney “played the percentages” in the decisive leg by banking on Delle not making a checkout – which he did. Deller made the final a year later and lost – but his career never hit the heights it did on that day 33 years ago.
Joe Johnson
Very few people has heard of the Bradford-born snooker player with the glamour model wife – but the man with the dancing eyebrows shocked the world by not only reaching the 1986 World Championship but by beating red-hot favourite Steve Davis to claim his only ranking title win. Johnson reached the final the following year but Davis had his revenge.
Ronnie Radford
The Hereford man scored arguably the most famous goal in FA Cup history, his 30-yard screamer helping the non-leaguers beat top-flight Newcastle 2-1 at Edgar Street in 1972. If Radford earned repeat fees every time the goal is shown, he would be able to buy Chelsea.
Peter Wilson
During the Olympics, sports that nobody takes notice off much come to the fore. Shooting is one, and Peter Wilson won gold at London 2012 to become a national name. But not for long. At the age of 28, Wilson retired so he won’t even defend his title.
