Blatter admits cold balls have been used in draws at European level
Former FIFA president Sepp Blatter says he has witnessed draws at a European level where hot and cold balls have been used to differentiate between the teams.
In an interview with La Nacion, the Swiss claimed such measures have never been taken by FIFA, though.
He said: "I never touched the balls. Of course, you can mark them [by] heating them or cooling them.
"I witnessed draws at the European level where that happened. But never at FIFA. Of course it can be done.
"You put the balls in the refrigerator beforehand. Just by comparing one and the other when you touch them you can tell the cold balls from the hot. When you touch them, you know what they are."
