St Mirren 1-1 Ross County
St Mirren face a trip to Dingwall after their Scottish Cup fifth-round tie against Ross County ended in a draw.
Richard Brittain put County in front five minutes from the break after Stuart Kettlewell was felled by keeper Craig Samson.
However, Steven Thompson quickly responded for the Premier League team by heading home a swift equaliser.
In added time, Brittain missed a penalty after Marc McAusland fouled Marc Corcoran in the area.
St Mirren captain Jim Goodwin returned from injury to play his first match since December, with Aaron Mooy and Gary Teale also included in place of the injured Graham Carey, cup-tied Dougie Imrie and substitute Steven Thomson.
Visiting manager Derek Adams handed starts to Steven Craig and Corcoran, replacing Michael Gardyne and Rocco Quinn for the First Division leaders.
Mooy stung the palms of visiting goalkeeper Michael Fraser with a speculative long-range effort from the left and, on the half-hour, Teale weaved his way down the right flank but his cross was booted clear from the feet of David Barron.
Corcoran sent an effort from just outside the box well over the bar after picking up possession in midfield - but his side then went in front from the penalty spot five minutes before the break.
Brittain picked out Kettlewell with a precise long cross-field pass and, as the County midfielder controlled it and raced in at the right corner of the box, home goalkeeper Samson rushed out and brought him down as he attempted to sweep the ball away with his arm.
Brittain took the subsequent penalty and coolly fired it into the bottom-left corner, with Samson diving the wrong way.
However, St Mirren were level within three minutes when Thompson rose to head home Van Zanten's cross from the right in a busy penalty area - and McGowan even went close to putting his side in front before half-time with a shot from outside the box which was palmed out for a corner.
With 54 minutes played, County's Iain Vigurs's shot from just outside the area went over the bar and then Jeroen Tesselaar prevented Colin McMenamin from pulling the trigger to put the visitors ahead.
Shortly after the hour mark, a Paul McGowan shot went wide of the Ross County goal as the hosts went in search of a lead, then another Vigurs attempt failed to find the St Mirren net and a McMenamin header drifted over the hosts' bar.
County could have gained the advantage when McMenamin fired towards goal, but his close-range effort hit the St Mirren side-netting.
In the dying moments of the match, Corcoran was brought down by McAusland inside the St Mirren penalty area, but Brittain missed the resulting penalty - much to the relief of the home support.