Formula One boss Bernie Ecclestone on Tuesday ruled out a 20th race on the 2013 calendar, putting an end to speculation that Turkey or another European country is in line to host a Grand Prix this year.
Ecclestone, in Dubai to announce a new sponsorship deal with Emirates airlines, said it was impossible to add another race ''at this late stage.''
There was speculation a European race would replace the Grand Prix of America.
The leading contender to fill the spot was Istanbul, which was dropped from the F1 calendar in 2012 after a disagreement with Ecclestone over the fee charged to stage the race. Portugal has also been mentioned in recent months as another candidate.
''Disappointed it didn't happen before,'' he said of the 20th race. ''You can't suddenly slot it in.''
Ecclestone also said he was ''100 percent'' confident that the Bahrain Grand Prix would go ahead despite ongoing unrest in the Gulf nation, adding that he ''hoped things were a little more peaceful'' this year.