Rangers (2) v Ross County (9) - Wednesday, 7.45pm
- Rangers have won eight of their nine Premiership games at Ibrox
- Ross County have won just once away from home in the Premiership
- Rangers were 4-0 winners in Dingwall at the end of October
- The last Ibrox meeting was a 2-1 win for Rangers in December 2017
St Johnstone (8) v Celtic (1) - Wednesday, 7.45pm (BT Sport)
- Celtic are five points clear at the top but Rangers have a game in hand
- Saints go into the match on the back of a 2-1 victory over Kilmarnock
- Celtic won 7-0 when the teams met on the opening day of the season
- The Hoops triumphed 2-0 on their last visit to Perth a year ago
