Cameron Carter-Vickers has scored on his Celtic debut as the Hoops beat Ross County 3-0.
The defender, signed from Spurs on transfer deadline day at the end of last month, opened the scoring just after the hour mark at Celtic Park.
Swiss striker Albian Ajeti, in from the start to replace injured Kyogi Furuhashi and Odsonne Edouard who was sold to Crystal Palace, scored a double as Postecoglou’s men continued their impressive home form.
Celtic have now won all three of their home league games, scoring 15 goals and conceding none, during a spell in which they have also defeated AZ Alkmaar, Hearts and Jablonec in Glasgow.
The win means they remain three-points behind league leaders Rangers who defeated St Johnstone in Saturday’s early kick-off.
Goals from Kemar Roofe and James Tavernier were enough to take all three points to Glasgow despite Gerrard’s men going behind early in the second half.
Elsewhere Leigh Griffiths made his debut for Dundee in a 0-0 draw with Livingston at Dens Park and Motherwell took all three points with a 2-0 home win over Aberdeen with goals from Van Veen and Ojala.
A 0-0 draw between St Mirren and Dundee United in Paisley made up the rest of Saturday’s fixtures.
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