Claudio Braga is tripped by Richard King in the D of the St Mirren box and Hearts have a tasty looking free-kick opportunity. Stephen Kingsley lines it up but puts too much elevation on it to take the heat off the home side.

Sub Greg Kiltie delivered a free-kick into the penalty area and the unmarked Lewis Mayo headed it into the path of Lyons and the skipper struck a sweet volley through a crowded penalty area and into the back of the net to send Killie into the quarter-final.