Rubuta ci gaba don wannan sakin layi - Ci gaban Ottoman zuwa Girka ya gabace shi da nasara akan Serbs zuwa arewa. Da farko, Ottomans sun ci yaƙin Maritsa
a shekara ta 1371. Sojojin Serbia sun jagoranci Sarki Vukašin na Serbia, mahaifin Yarima Marko kuma abokin mulkin sarki na ƙarshe daga daular Nemanjic ta Serbia. Wannan ya biyo bayan wani wasan kwaikwayo na Ottoman a cikin 1389 Battle of Kosovo.