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Hearts can move five points clear at the Premiership summit - ahead of Celtic's game on Sunday - if they dump rivals Hibs.
Derek McInnes' men are yet to to taste defeat in their opening six league games with five wins and a draw.
That record has the Jambos sitting two points clear of Brendan Rodgers' champions at this early stage and should they emerge victorious under the lights at Tynecastle, they'd go into the international break at top of the pile.
David Gray and his troops arrive in Gorgie also unbeaten but they've drawn five of their six games so far.
They know a win over their city rivals would fire a major boost around the Easter Road club going into the October international break - but defeat and they'd find themselves 11 points back on the Jambo