Kay Karssemakers crashed in the first moto of the Grand Prix of Loket on Sunday and injured himself.
Karssemakers complained of pain in his elbow and thumb. Examination has shown that he has no fractures in his elbow but that there is a crack in his thumb.
Karssemakers will now have to take a week of rest before he can return to his doctor. This means that he will definitely miss the Grand Prix of Lommel.