Motherwell midfielder Keith Lasley has urged the club's young players to seize their chance amid the significant recent exodus from Fir Park.
St. Mirren is second-bottom and just two points ahead of Falkirk after losing 3-1 to Motherwell in what was a second successive home defeat.
A second-half header from defender Tam Scobbie was enough to ease ten-man Falkirk to a vital victory over Motherwell in their bid to avoid relegation.
Hibs manager Mixu Paatelainen savoured his first taste of victory in the Edinburgh derby as Steven Fletcher's goal clinched a 1-0 win over Hearts.
Eric Odhiambo's strike was not enough to aid Inverness Caledonian Thistle's relegation battle as Dundee United equalised for a 1-1 result.
Rangers narrowed the gap at the top of the Scottish Premier League to one point with strikes from Kyle Lafferty and John Fleck at Ibrox.