Sometimes the numbers simply don't add up.
When Bolivian Primera Division leaders Nacional Potosi met Venezuelan outfit Zulia in the opening stage of the Copa Sudamericana, they came out on top in just about every statistical category, apart from the one that counts the most - goals.
And that means, despite putting their opponents under intense pressure at Estadio Víctor Agustín Ugarte, they go into the second leg of the tie in Venezuela 1-0 down.
Zulia, eighth in the Venezuelan Primera Division, took one hell of a pummelling - then stole a breakaway goal to pull off the unlikeliest of victories.
Potosi went about their work as you might expect unbeaten league leaders to do.
A total of 54 shots - 15 on target, 30 off, with three hitting the woodwork - resulted in a total of zero goals.
Potosi limited Zulia to 21
Zulia goalkeeper Leo Morales managed to keep them at bay despite the onslaught, which included 13 Potosi corners and 90
But Zulia striker Bryan Velasquez Moya had the final say.
He put the finishing touch to a 92nd-minute counter-attack, beating Potosi goalkeeper Javier Rojas with the last - and most crucial - of six shots his side took in the game for a victory straight from the Jose Mourinho playbook.
As sporting upsets go, it's not quite Buster Douglas beating Mike Tyson or Leicester winning the Premier League, but that will be of little consolation to Potosi.
They get the chance to have another go at scoring when the return leg takes place on April 16.