FT: Motherwell 5-0 St Mirren (Erwin 2, McDonald, Sutton 2)
Buddies now 10 points behind at the bottom
FT: Ross County 1-0 St Johnstone (Boyce)
Seventh win in eight-game unbeaten run for Staggies
Motherwell manager Ian Baraclough
"[A win] would take us 10 points away from them, which is massive at this stage of the season. I don't know what to expect from the opposition. For us, it's all about doing the basics."
Motherwell: George Long, Law, Laing, McManus, Straker, Ainsworth, Lasley, Pearson, Johnson, McDonald, Erwin. Subs: Ramsden, Sutton, Twardzik, O'Brien, Moore, Dominic Thomas, Grant.
St Mirren: Ridgers, Naismith, McAusland, Genev, Tesselaar, Goodwin, Dayton, Sadlier, Mallan, McGinn, Arquin. Subs: Kelly, Gow, Thompson, Wylde, Brown, Sonupe, Wilks.
Referee: Craig Thomson.
There is live Sportsound commentary of Motherwell v St Mirren on BBC Radio Scotland 810MW, on DAB digital radio and here online using the 'Live Coverage' tab or by simply clicking the media player. Sportsound will also provide updates from Ross County v St Johnstone.
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So, a lot at stake this evening, particularly at the bottom of the Premiership. Let me know your thoughts on tonight's games...
Saints could move above Dundee United into fourth place, at least until tomorrow evening. I'll look ahead to tomorrow evening's games a little later...
Up in Dingwall, third-bottom Ross County will attempt to extend their seven-match unbeaten run against visitors St Johnstone, who are looking to preserve their top-six place.
Image source, SNSSaints have beaten County three times in all competitions so far this season
However, most of St Mirren's wins this seasons have been away from home. Tonight's game in Lanarkshire could be pivotal.
The Steelmen won at the weekend to increase their advantage after St Mirren lost to Celtic on Friday evening.
The bottom-place Buddies are seven points adrift of Well with seven games left.
Tonight, it's the battle of the Scottish Premiership's bottom two at Fir Park, Motherwell v St Mirren.
Image source, SNSMotherwell and St Mirren will meet for a third time this term
It's the beginning of a busy midweek of Scottish fixtures scheduled for this evening, tomorrow and Thursday.
Good evening and welcome to Tuesday's live Scottish football coverage.