In the summer of 1998 Iván Zamorano lost his number. Ronaldo had come back from the World Cup and wanted the nine that Zamorano had been wearing at Inter Milan. Roberto Baggio had just signed and taken the ten. Zamorano was handed eighteen, a number that meant nothing to a striker who had built a career on being a centre forward first and everything else second. So he had a plus sign added between the one and the eight. On the back of the shirt, 1+8 still added up to nine.
It remains the cleverest solution anyone has found to a squad number problem, and it is far from the only one. Since clubs stopped handing out 1 to 11 by position, players have used the back of their shirt to mark a birth year, settle an argument, make a joke or simply refuse to be moved. Here are the strangest shirt numbers in football, why they happened, and what they did to the shirts themselves.
The strangest shirt numbers in football, in short
- 1+8, Iván Zamorano, Inter Milan, 1998 to 2000. Eighteen with a plus sign, because nine had gone to Ronaldo.
- 80, Ronaldinho, AC Milan, from 2008. The ten belonged to Clarence Seedorf, so he took his birth year.
- 45, Mario Balotelli, at Inter, Manchester City and Milan. A number he carried between clubs rather than a number he was given.
- 69, Bixente Lizarazu, Bayern Munich, from 2005. Born in 1969, 1.69 metres tall, 69 kilograms.
- 88, Gianluigi Buffon, Parma, 2000. Abandoned within weeks after criticism of the number's far-right associations.
- 0, Hicham Zerouali, Aberdeen, 2000. Banned in Britain the following season.
- 1, Edgar Davids, Barnet, 2013. An outfield player in the goalkeeper's number, on purpose.
- 52, Nicklas Bendtner, Arsenal, 2009. He refunded supporters who had already bought a 26.
How numbers stopped meaning positions
For most of the twentieth century a shirt number told you where a player stood. Numbers appeared in English top-flight football in the 1928 match between Chelsea and Swansea Town, and the Football League made them compulsory from the 1939-40 season. The 1954 World Cup was the first tournament where each player kept the same number throughout.
Everything changed in the 1990s. The Football Association moved to persistent squad numbers in 1993, the Premier League followed the next season, and names went above the numbers for the first time. A number was suddenly personal property rather than a position, and it could be anything from 1 to 99. That is the moment the strange numbers start.
1+8: Iván Zamorano refuses to stop being a nine
Zamorano had worn nine at Inter since 1996. When Ronaldo returned from France 98, a Nike agreement meant the Brazilian would wear nine, and Baggio's arrival closed off the ten. Zamorano took eighteen. The idea of the plus sign came from Sandro Mazzola, and in the early games it was improvised with tape before the kit supplier began producing the shirts with 1+8 printed properly.
It worked because it was not a gimmick. Zamorano scored, celebrated with his arms out and the sum on his back, and turned a demotion into the most recognisable back print in Serie A. Two decades on, an original Inter Milan 1998-99 away shirt with the 1+8 print is one of the shirts collectors ask for by name rather than by season, and it sits at the top of most want lists among vintage Inter Milan shirts.
80: Ronaldinho takes his birth year at Milan
When Ronaldinho joined AC Milan from Barcelona in 2008 he wanted the ten he had worn at Camp Nou and with Brazil. It belonged to Clarence Seedorf, and Milan had a long-standing policy of never asking a player to give up his number. Ronaldinho went for 80 instead, for the year he was born.
Milan being Milan, 80 quickly stopped looking odd. It helped that the number sat on one of the better red and black templates of the period, and that Ronaldinho's Milan years are now viewed more fondly than they were at the time. A Ronaldinho 80 Milan shirt is one of the few high-number prints that people buy because of the number, not in spite of it.
45: the number Mario Balotelli carried with him
Balotelli broke through at Inter wearing 45 and then refused to let it go. When he moved to Manchester City in 2010 he swapped numbers with teammate Greg Cunningham so he could keep it. When he signed for Milan in 2013 he was given 45 again.
Most high numbers in Italian football are accidents of squad registration. Balotelli's was a signature, which is why a Manchester City shirt with the Balotelli 45 reads as a period piece from the first City title push, and why the same print keeps turning up among classic AC Milan shirts a few seasons later.
69: Bixente Lizarazu does the maths
Lizarazu left Bayern Munich for Marseille in the summer of 2004 and lasted six months before going back to Munich in January 2005. His old number three had gone. He asked for 69 and explained it plainly: he was born in 1969, he stood 1.69 metres and he weighed 69 kilograms.
The two shirts tell the story better than any interview. The Marseille 2004-05 home shirt with Lizarazu's number three covers the half season away, and the Bayern Munich away shirt with the 69 covers what happened when he came home and found his number occupied.
88, 0 and 1: the numbers that ran into trouble
Not every unusual choice survives contact with the rulebook. Gianluigi Buffon swapped his one for 88 at Parma in 2000 and was immediately criticised over the number's associations with the far right. He said it stood for four balls, meaning character, and that it marked a rebirth after the injury he suffered before Euro 2000. He offered to change it and settled on 77. In 2023 the Italian federation banned 88 outright.
Hicham Zerouali was given permission to wear 0 at Aberdeen in 2000, which suited a player the supporters already called Zero. Both the Scottish Premier League and the Premier League outlawed the number the following season and he moved to 11. He died in a car accident in Morocco in 2004, aged 27, and the shirt is still remembered at Pittodrie.
Edgar Davids went the other way. As player-manager of Barnet in 2013 he picked the goalkeeper's number one and said he wanted to start a trend of midfielders wearing it. Nobody followed him, which is roughly what you would expect. If you like the idea of the keeper's number on an outfield back, the vintage goalkeeper shirts of the same era are worth a look for their own reasons.
Why some numbers get banned and others do not
Governing bodies intervene when a number carries meaning outside football. Zero was removed because squad numbering was standardised at 1 to 99. The number 88 was banned in Italy because of its use as neo-Nazi code. Numbers such as 69 have never been outlawed anywhere, which is why Lizarazu could wear his without a word from the German federation.
30, 19, 10: how a number becomes iconic
The reverse of the strange number is the number that grows into a legend, and Lionel Messi's Barcelona career is the clearest example. He started in 30 as a teenager, moved to 19, and only inherited the ten in 2008 when Ronaldinho left for Milan and freed it up.
That sequence is why a Barcelona shirt with Messi's number 30 is a different object from a Messi 10. One is the finished article and sells on the strength of the name. The other dates the shirt precisely, tells you the player was still becoming himself, and is far harder to find.
What an unusual number does to a shirt
Handling these shirts for a living teaches you a few things that the number stories never mention.
- Rarity is real. Clubs and printers produced far fewer 1+8, 80 and 45 prints than they did tens and sevens, because far fewer supporters ordered them at the time. Scarcity now follows from indifference then.
- The print is the risk. Unusual numbers attract reproductions, and a plus sign or an unusual character is exactly where a modern print gives itself away. Spacing, the shape of the digits and the flock or heat-applied finish should match the season's official supplier style, not a generic font.
- Condition matters more than usual. A cracked or lifting number on a common shirt is a shame. On a shirt bought for its number, it is most of the value gone.
- The story sells it. A shirt that answers a question keeps its appeal longer than a shirt that only records a season. That is why these prints hold up while ordinary squad numbers from the same kits do not.
If that is the sort of detail you enjoy, our piece on the most iconic football shirts you can own follows the same idea across whole kits rather than single numbers.
Frequently asked questions
What is the strangest shirt number in football?
Iván Zamorano's 1+8 at Inter Milan is the usual answer, and with good reason. It is the only widely worn shirt number that includes a mathematical symbol, and it was created specifically so the number would still add up to nine.
Is the number 69 allowed in football?
Yes. Squad numbers run from 1 to 99 in most competitions and 69 has never been banned. Bixente Lizarazu wore it at Bayern Munich from 2005 for entirely literal reasons: his birth year, his height and his weight.
Why can players not wear number 0?
Hicham Zerouali wore 0 for Aberdeen in 2000 with special permission. Both the Scottish Premier League and the Premier League ruled it out the following season, since squad numbering was standardised from 1 upwards. He switched to 11.
Why did Ronaldinho wear 80 at AC Milan?
He wanted the ten, but Clarence Seedorf had it and Milan did not ask players to give up their numbers. Ronaldinho chose 80 for the year he was born.
Do shirts with unusual numbers sell for more?
Often, yes, although it depends on the player as much as the number. Prints that tell a story, such as 1+8, 80 or 45, were produced in small quantities and are now harder to find in good condition than the tens and nines from the same kits.
Which shirt number is the rarest?
Among numbers actually worn in competitive football, 0 is the rarest in Britain, since Zerouali is the only player to have used it before it was outlawed. Zamorano's 1+8 is rarer still as a printed design, because only one player ever wore it.