Captain Stuart Law added 66 in nine overs with Du Plessis before Nottinghamshire seamer Andre Adams removed both Law and Kyle Hogg in the 15th over.

BBC: Du Plessis takes Lancs to victory

Hearts were then awarded a 64th-minute penalty for handball, seemingly against Adams, from a Templeton free-kick and went ahead via Kyle's emphatic finish.

BBC: Sport - Football - St Johnstone 0-2 Hearts