SPL Round-up:Celtic are on the brink of retaining their Bank of Scotland Premier League after a 1-0 home win over Motherwell.
A 52nd-minute goal by substitute Derek Riordan, who had replaced the injured Maciej Zurawski just before the interval, gave the unconvincing Parkhead side their first win in four SPL games.
If Rangers lose at St Mirren tomorrow then Celtic will be champions, otherwise they can wrap the title up against Kilmarnock at Rugby Park in their next SPL game in a fortnight's time.
Elsewhere Aberdeen's European hopes suffered a setback as Dundee United won a pulsating clash 4-2 at Pittodrie where five goals were scored in the opening 17 minutes.
John Daly netted from the penalty spot inside 60 seconds following Michael Hart's foul on Collin Samuel, but Aberdeen equalised when Scott Severin's free-kick was deflected in by Steve Lovell.
Darren Mackie then converted a penalty after David McCracken brought down Richard Foster, but Noel Hunt's header and a goal from Greg Cameron in either half saw United take all three points back to Tayside.
Hearts sub Michal Pospisil headed a late winner to boost his side's European hopes to edge out Kilmarnock 1-0 in a tight contest at Tynecastle.
Neither goalkeeper had made any serious saves as two packed midfields cancelled each other out before the Czech scored four minutes after coming on.
Jose Goncalves was sent off in injury-time after a touchline melee which was out of keeping with an otherwise uneventful encounter.
Inverness midfielder John Rankin scored against Falkirk for the fourth time this season to claim a 1-1 draw and deny the Bairns a third successive victory.
Falkirk looked to have pinched the points when substitute Carl Finnigan lashed home the game's opening goal in the 80th minute.
But six minutes later Rankin struck again to continue his remarkable scoring record against the Bairns.
At the bottom, Dunfermline threw the fight for survival in wide open after Phil McGuire netted late to give them a 1-0 victory against Hibernian - a timely first home win for manager Stephen Kenny.
The centre-back, who had been struggling with a virus, bulleted a header high into the net seven minutes from time from Adam Hammill's free-kick.
Substitute Mark Burchill should have added a second moments later after going through on goal unchallenged but Andy McNeil made a superb save, but Dunfermline's win means they trail St Mirren by just four points.
