Two goals from Branimir Krunic on 22 and 65 minutes, and another from Pavle Delibašic, delivered maximum points for Leotar, who on Saturday entertain second-placed NK Zeljeznicar in a title showdown.
Zeljeznicar kept up their championship hopes with a hard-earned 1-0 home success against FK Sloboda Tuzla. Meanwhile, NK Široki Brijeg beat FK Buducnost Banovici 4-0 thanks to two second-half goals from Miroslav Dujmovic.
FK Sarajevo's chances of catching NK Široki Brijeg in the race for third place were dented by a 1-0 away defeat by FK Mladost Gacko. Igor Popovic scored the only goal in the last minute.
Elsewhere, a Zoran Djurišic hat-trick helped FK Rudar Ugljevik to a 5-0 home win against NK Orašje. There were 1-0 victories for NK Zepce at home to NK Brotnjo, and NK Posušje away to FK Bosna.
FK Glasinac won another mid-table battle 3-0 against NK Zrinjski, while fifth-placed FK Celik defeated visitors NK Jedinstvo 4-2. Home advantage also told as relegation-threatened FK Velez edged past FK Kozara 1-0.
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