Rubuta ci gaba don wannan sakin layi - A ranar 26 ga Satumba, 1371, an kashe Vukašin kuma sojojinsa sun ci nasara a yakin Maritsa
Ka yi haƙuri. Kusan watanni biyu bayan haka, Sarkin Uroš ya mutu. Wannan a hukumance ya sanya Marko sarkin ƙasar Serbia; duk da haka, manyan mutanen Serbia, waɗanda suka zama masu zaman kansu daga ikon tsakiya, ba su ma yi la'akari da amincewa da shi a matsayin babban mai mulkin su ba. Wani lokaci bayan 1371, ya zama Ottoman vassal; a shekara ta 1377, wasu manyan yankuna da ya gada daga Vukašin wasu manyan mutane suka kwace su. Sarki Marko, a zahiri, ya zama mai mulkin yanki wanda ya yi sarauta a kan ƙaramar ƙasa a yammacin Makidoniya. Ya ba da kuɗin gina gidan sufi na Saint Demetrius kusa da Skopje (wanda aka fi sani da gidan sufi na Marko), wanda aka kammala a 1376. Daga baya Marko ya zama Ottoman vassal kuma ya mutu a ranar 17 ga Mayu 1395, yana yaƙi da Wallachians a Yaƙin Rovine.