Colin McMenamin scored a brace to help First Division leaders Ross County record a comfortable win over Livingston.
Scott Boyd should have put the home side ahead after 22 minutes but he headed a simple chance wide.
However, County did take the lead six minutes later, McMenamin firing home Boyd's headed pass.
Livingston's best chances fell to Iain Russell. First, he shot wide after 52 minutes and 16 minutes later his powerful effort was well saved by Michael Fraser.
McMenamin scored his second with eight minutes to go, slotting home from close range after good work from Stuart Kettlewell.
And County made the points safe after 87 minutes when Sammy Morrow collected Richard Brittain's pass to find the corner of the net.
Ross County: Fraser,Miller,Boyd,Munro,Morrison,Brittain, Kettlewell,Quinn (Corcoran 60),Vigurs,Gardyne (Craig 60), McMenamin (Morrow 83). Subs Not Used: Malin,Byrne. Booked: Gardyne. Goals: McMenamin 28,82,Morrow 87.
Livingston: McNeil, Ross, Craig Barr, Watson, Talbot (Robert Barr 34), Kyle Jacobs, Fox, Keaghan Jacobs, Scougall, Boulding (Deuchar 70), Russell (McNulty 76). Subs Not Used: Jamieson, Fordyce.
Ref: John McKendrick