The 23-year-old is currently sitting second in the World Championship standings, just three points off Great Britain’s Tai Woffinden in first.
But he has failed to recover from injuries sustained last Saturday while riding for his Polish club Czestochowa against Torun in the Polish Ekstraliga play-off semi-finals.
Sayfutdinov’s place in Saturday’s line-up will be taken by Denmark’s SGP second reserve Leon Madsen - who dons the No.20 race jacket.
Watch the Slovenia FIM Speedway Grand Prix LIVE & Exclusive on British Eurosport 2 HD from 6pm on Saturday 7th September.
- Sports & Recreation