In an interview with Aftonbladet, Hafsteinsson reveals that he will retire as a coach and retire if the discus disappears from Diamond League next year.

- Yes, I am one of those who fought hardest for the discus in the whole world. I've worked the hedge of mine. And then maybe they should put down the branch. It stings in the heart if it gets lost. It then burns into hell, the Icelander tells the newspaper.

By 2020, there will only be 24 branches in the Diamond League instead of the 32 that it is now.

Hafsteinsson fears that the discus is at risk when the money-losing athletic gala is slimming down.

- This is our World Cup. The chance to show up and make money. Discriminating against certain branches and athletes is excruciating, he tells Aftonbladet.

On Friday, Daniel Ståhl throws a discus in the Diamond League final in Brussels.