National 100m champion Ferdinand Omanyala and Boniface Mweresa have been barred from competing at the third and final meeting of Athetics Kenya national Relays on Saturday at Nyayo National stadium.
Omanyala, who won in the last two meetings at the same venue was excluded from the start list that was released by Athletics Kenya.
The university student ran the fastest on Kenyan soil 10.11 seconds.
Mweresa, who competes in 200m, have been left.
Mweresa and Omanyala have been left out by the federation owing to their past anti-doping rules violation despite having finished serving their doping bans not exceeding two years.