 Nyora kupfuurira kweiyi ndima - Petar Ovčarević aibva kuBelgrade, uye aive hajduk. Achiri muduku akabatwa nevaOttoman, asi akakwanisa kuzvisunungura ndokujoina uto reOttoman. Akashumira vaOttoman kwenguva refu, ipapo akabatana nebasa reHungary. Akanga ari mutungamiri we Šajkaši Danube river flotilla muZemun, uye panguva yeKukombwa kweBelgrade 1521akanga ari mutungamiriri mukuru weŠajkaši muBelgrade. Mushure mekupona pakukombwa, uko kwakaguma nekutora kweOttoman, uye kuzengurira kwechinguva, akabatana neOttomans ndokuva munhu anovimba nemukuru weOttoman uye sanjak-bey weBelgrade, Bali Bey Jahjapašić. Akava mutungamiriri weMartolos, achiraira vaSerbia, vakavakirwa nenzizi dzeBelgrade, vachigara munharaunda yavo voga uye vachitungamira ngarava dzezvikepe. Chikwata chake chaiva nebasa rokudzivirira ngarava dzevaOttoman paSava neDanube. 