Referee appointments for the opening weekend of the season in the Ladbrokes Premiership, Championship, League 1 and League 2.
Ladbrokes Premiership - Saturday
Celtic v Heart of Midlothian - Kevin Clancy (Sky Sports, 12.30pm)
Dundee v Ross County - Willie Collum
Hibernian v Partick Thistle - Nick Walsh
Kilmarnock v St Johnstone - Steven McLean
Ladbrokes Premiership - Sunday
Aberdeen v Hamilton Academical - Euan Anderson
Motherwell v Rangers - Bobby Madden (Sky Sports, 1.30pm)
Ladbrokes Championship - Saturday
Dumbarton v Morton - Steven Kirkland
Inverness Caledonian Thistle v Dundee United - Craig Thomson
Livingston v Dunfermline Athletic - Alan Newlands
Queen of the South v Brechin City - Colin Steven
St Mirren v Falkirk - Don Robertson
Ladbrokes League 1 - Saturday
Albion Rovers v Ayr United - Graham Beaton
Alloa Athletic v Raith Rovers - Barry Cook
Arbroath v Queen's Park - Gavin Duncan
Forfar Athletic v Airdrieonians - Steven Reid
Stranraer v East Fife - Kevin Graham
Ladbrokes League 2 - Saturday
Annan Athletic v Peterhead - David Lowe
Berwick Rangers v Clyde - David Munro
Edinburgh City v Montrose - Mat Northcroft
Elgin City v Cowdenbeath - Grant Irvine
Stenhousemuir v Stirling Albion - Lloyd Wilson