A tumultuous few days in the Bulgarian League continued with three coaches resigning following the weekend's fixtures, bringing the total number of managerial casualties to 13 since the season started in August.
Velizar Popov resigned as Cherno More Varna coach after they lost to Pirin Blagoevgrad and Ivan Marinov decided to leave Lokomotiv Plovdiv following their defeat by city rivals Botev.
Sliven's Diyan Petkov was the third coach to quit after his side were held to a 1-1 home draw by Beroe Stara Zagora.
Cherno More, however, refused to accept Popov's resignation and insisted he would stay in charge until the mid-season break starting in December.
On Monday, league leaders CSKA Sofia announced they had suspended nine players for breaking club rules and staying out late partying.