Allan Johnston urged Kilmarnock to pull clear of the drop-zone after a much-needed 2-1 win over fellow strugglers Ross County.
Kilmarnock halted a run of four straight defeats as Kris Boyd scored one and created the other in a 2-1 SPFL win over Ross County in Dingwall.
Ross County manager Derek Adams will hand late fitness tests to Branislav Micic, Steven Saunders and Rocco Quinn ahead of their game against Kilmarnock.
Hibernian recorded a 1-0 win to claim their first win over Ross County at the seventh attempt thanks to Danny Handling to reach the fifth round of the Scottish Cup.
Ross County have announced that Ivan Sproule has left the club with immediate effect.
Ross County will be without winger Ivan Sproule for the Scottish Cup game with former club Hibernian after he left the club with immediate effect.
Gary Locke praised his side's character in the 2-2 draw with Ross County but insisted Hearts need to eliminate defensive errors from their game if they are to progress this season.
Ryan Stevenson's dramatic late equaliser salvaged a 2-2 draw for Hearts in a fiercely contested affair against 10-man Ross County in the SPFL.