Celtic closed the gap on Scottish Premier League leaders and fierce rivals Rangers to seven points after overcoming Dundee United 1-0 at Parkhead.
Tony Mowbray's men grabbed the only goal of the game through Robbie Keane as he notched his third goal since making a deadline day loan move from Premier League side Tottenham Hotspur.
Rangers' away-day clash at St Johnstone was called off after the McDiarmid Park pitch was deemed unplayable following freezing conditions in Perthshire overnight.
Falkirk grabbed a valuable 3-1 win against Aberdeen at the Falkirk Stadium as they moved to within one point of Hamilton at the foot of the table.
Falkirk fell behind to an early Charlie Mulgrew effort before storming back with Pedro Moutinho and Darren Barr hitting the back of the net as they took control before half-time.
Enoch Showunmi secured the three points to improve their hopes of avoiding the drop at the end of the season.
Motherwell beat Hibernian 1-0 at Fir Park as they made their numerical advantage count.
Midfielder Lee Miller was dismissed in the opening period before Jamie Murphy grabbed a late winner to end a dismal week for Hibs boss John Hughes.
He was sent to the stands during their 5-1 midweek defeat at St Johnstone, picking up a six-game touchline ban for his troubles.
The win keeps Motherwell's European qualification aspirations on track as a result.
Kilmarnock and St Mirren played out a 1-1 draw at Rugby Park in a result that has slightly eased both sides' relegation fears.
The hosts opened the scoring thanks to striker Chris Maguire but Billy Mehmet snatched a point with a 82nd-minute leveller.