Aberdeen missed out on the chance to return to the top of the Scottish Premiership after being held to a goal-less draw by Hearts at Murrayfield.
The Jambos created far more opportunities than the Dons but could find no way past an inspired Joe Lewis, who made a series of excellent saves.
The result moves the Dons level on points with league leaders Celtic.
This was a historic occasion as Murrayfield Stadium hosted a domestic football match for the first time. The Jambos are playing three matches at the ground while renovation work takes place at Tynecastle.
The Dons, cheered on by a 7,000-strong Red Army, were looking to preserve their 100% record.
Manager Derek McInnes made two alterations from the team that defeated Partick Thistle 4-3 before the international break with Dominic Ball making his debut and Adam Rooney coming in for Greg Tansey and Greg Stewart.
Craig Levein, taking charge of the Jambos for the first time, made four changes with goalkeeper Jack Hamilton and Northern Ireland international Kyle Lafferty among those dropping out.
The Dons lined up in an unusual 3-5-2 formation with Graeme Shinnie playing just behind Rooney and Stevie May, who were starting together for the first time.
The visitors created the first opening with May lobbing the ball over Hearts goalkeeper Jon McLaughlin but Rooney was unable to head home from two yards out. The Irishman felt he had been barged from behind by Jambos captain Christophe Berra but referee Craig Thomson was not convinced.
Hearts were appealing for a penalty of their own in the 21st minute when Jamie Walker tumbled under minimal contact from Ball but again Thomson waved away the protests.
Ball, deployed as a defensive midfielder, made a composed start to the match and had a chance to open the scoring soon after when a Ryan Christie free kick was blocked but the Englishman sliced wide.
The Dons had started better but Hearts suddenly came to life around the half-hour mark and the visitors had goalkeeper Lewis to thank for keeping the scores level.
The former Cardiff City man produced a fine stop to keep out a Walker free kick before making an even better save to thwart Esmael Goncalves.
The Dons almost capitalised from a swift counter-attack soon after with Shinnie feeding Christie who dragged his shot just wide.
Hearts were next to threaten as the game raged from end to end but again there was no way past Lewis with the Dons stopper showing great agility to tip Walker’s attempt over the crossbar.
The Hearts pressure continued after half-time with Ball heading a Christophe Berra volley off the line.
Lewis’ incredible display continued with another superb save to deny Ross Callachan a debut goal for Hearts before he turned a curling effort from Walker around the post.
Aberdeen were getting deeper and deeper and had another fortunate reprieve in the 64th minute when Goncalves’ effort bounced back off the crossbar.
Lafferty headed over before the Dons made a double change with Gary Mackay-Steven and Nicky Maynard replacing Rooney and Scott Wright.
Hearts continued to push for a winner but the Dons held on for a point.