Celtic were left stunned following a 2-0 defeat away at Dundee in the Scottish Premiership on Sunday in a game that was delayed due to fan protests against the visitors' board. 

Kelechi Iheanacho rattled the woodwork after he lashed a speculative long-range effort against the post early on.

However, it was Dundee who seized the initiative inside 18 minutes as Clark Robertson latched onto a pinpoint Cameron Congreve corner to stun the visitors. 

A flash counter-attack from the hosts in first-half stoppage time compounded Celtic's frustrations. Congreve was involved again as his cross was met by Joe Westley, whose flick took a fortuitous deflection off Cameron Carter-Vickers before rolling into the back of the net to double Dundee's advantage. 

Celtic posted a whopping 87.1% possession after the break, but were unable to make it count as the hosts snuffed out any threat, restricting Brendan Rodgers' side to just two shots on target from nine attempts. 

Celtic were handed a lifeline in the 70th minute, as they were awarded a penalty after a handball call, only for VAR to overturn the decision on closer inspection.

The defending champions then thought they had halved the deficit in the 77th minute, but Reo Hatate's attempt was cleared off the line by Luke Graham as Celtic fell to a defeat that leaves them five points behind leaders Hearts.

Data Debrief: Dundee end 24-year wait

Celtic have lost away at Dundee for the first time since September 1988 in all competitions. They had won 28 of their previous 36 visits in that time, and this result sees their longest unbeaten run away from home against any team in club history come to an end.

Meanwhile, this momentous victory means that Dundee have ended a run of 46 games without a win against Celtic in all competitions (D7 L39), since a 2-0 triumph in May 2001.

Congreve was a star of the show for Dundee, and his assist for the opener was his fourth of the Premiership campaign, with no player registering more in the Scottish top flight.