Aberdeen moved level on points with Premiership leaders Celtic thanks to a 3-0 home win over St Mirren at Pittodrie on Saturday.
An Adam Rooney double and a Mark Reynolds goal gave Derek McInnes' men a comfortable victory as they joined Celtic, who entertain Hamilton on Sunday at 1pm, at the summit.
St Johnstone won the Tayside derby 2-0 against Dundee United at Tannadice, where Michael O'Halloran scored both goals in the first half for Tommy Wright's team.
Third-placed Inverness CT played out a thrilling 3-3 draw with Kilmarnock in the Highland capital. Graeme Shinnie, Nick Ross and Danny Williams had Caley Thistle ahead three times but Nathan Eccleston, Craig Slater and Tope Obadeyi replied.
Ross County moved out of the bottom two thanks to a 3-1 win over Partick Thistle at Firhill. Craig Curran, Raffaele De Vita and Marcus Fraser netted for the Staggies, with Lyle Taylor claiming a consolation.
Motherwell are now at the foot of the Premiership after Paul McGinn's early goal gave sixth-placed Dundee a 1-0 victory at Fir Park.