Rangers are three points clear at the top of the Premiership table after a 2-0 win at Hamilton Accies. Ianis Hagi and James Tavernier got the goals before the hosts had Scott McMann sent off, as the Ibrox club notched up a sixth successive shut-out.
Kilmarnock claimed their first win of the season in style, beating Dundee United 4-0 at Rugby Park with goals from Nicke Kabamba (2), Eamonn Brophy and Rory McKenzie.
Livingston also got their first victory of 2020/21 - Jon Guthrie scored the only goal in a 1-0 home win over Ross County, who had Carl Tremarco sent off.
Stevie May was the matchwinner as St Johnstone moved level on points with St Mirren thanks to a 1-0 success against the Buddies at McDiarmid Park.
There are two games on Sunday afternoon - Celtic v Motherwell at 3.00pm and Hibernian v Aberdeen, live on Sky Sports at 4.30pm.
