Premier League darts champion Glen Durrant has withdrawn from this weekend's International Open after testing positive for Covid-19.
The three-time BDO world champion had been due to compete in the European Tour event in Germany, but is isolating in line with government guidelines.
The 49-year-old beat Nathan Aspinall in the Premier League final in Coventry a week ago.
Adrian Lewis and Stephen Bunting will return to action in Riesa.
Both players received negative results from Covid-19 tests, having tested positive before the recent World Grand Prix.