By Derek Clark at Rugby Park
A ruthless Ross County embarrassed a dismal Kilmarnock in a first-half blitz that intensifies the pressure on under-fire boss Gary Locke.
The Staggies opened the scoring as early as the first minute when a Liam Boyce strike was deflected into the net.
They doubled their advantage three minutes later when debutant Jonathan Franks fired home after a Craig Curran strike was blocked off the line.
The third goal came just before the half-hour mark when Boyce notched his second of the afternoon, tapping in at the back post from an initial Jamie Reckord drive.
That goal was enough for some home supporters who decided they had seen enough and left.
The fourth came on the 35th minute when captain Andrew Davies fired home at the back post from a Michael Gardyne corner.
If truth be told Killie were fortunate to go in at break just four goals down, after Fraser, Curran and Graham spurned opportunities for the visitors.
The second half was pretty much a non-event, the hosts were better without creating any clear cut chances, although it was evident County took their foot off the pedal.
As the final whistle blew, you could sense the anger and frustration within the home support with many calling for Locke to go.
Kilmarnock have failed to win at home since March and with the team rooted to the bottom of the Premiership, with a goal difference of minus ten, the board have a big decision to make.