Kilmarnock pulled off a stunning upset against Scottish Premiership leaders Hearts with a 1-0 victory at Rugby Park that has thrown the title race wide open. Michael Schjønning-Larsen's 17th-minute header proved decisive as the Ayrshire side eased their relegation fears while dealing a major blow to Hearts' championship hopes.

Hearts entered the match knowing they had to respond after Celtic's earlier win over Motherwell cut their lead at the top to just two points. Instead, the Edinburgh side suffered their third consecutive away defeat, leaving them vulnerable as third-placed Rangers prepare to face St Mirren. Kilmarnock's win moves them level on points with St Mirren in 10th place and nine clear of bottom club Livingston.

The match saw Kilmarnock defend resolutely against a Hearts side that dominated possession but created few clear chances. Goalkeeper Kelle Roos made several crucial saves, while the home side's counter-attacking threat kept Hearts' defense under pressure throughout. Despite late pressure from the visitors, Kilmarnock held firm to claim a vital three points that could prove pivotal in both the title race and relegation battle.