Fifa TV Commentator John Helm can name all 92 English Football League Clubs but you wouldn't believe that he holds the Guinness World Record for naming them all in just 26 seconds.
Helm, originally from Bradford in England, was part of a team of BBC commentators competing on a programme called Brain of Sport during the 1981/82 season when he rapidly named every team with ease.
It's unlikely anyone will ever dare to attempt breaking this remarkable record.
Helm could also tell you every County Championship team and all 36 Rugby League teams from the same season at the same speed.
