Son Heung-min's brace earned Tottenham a share of the derby spoils after an entertaining 2-2 draw at Arsenal.The result maintained both north London clubs’ unbeaten starts to the Premier League campaign, but Mikel Arteta’s men would have been disappointed after they twice took the lead.A Cristian Romero own-goal broke the deadlock at the Emirates and while Son levelled for Spurs before half-time, Arsenal went back in front when Bukayo Saka rolled home a penalty in the 54th-minute following Romero’s handball.Tottenham’s momentum under new head coach Ange Postecoglou would not be checked, though, with Son hitting another equaliser 108 seconds later and it finished all square.Unbeaten starts for both teams had ramped up the excitement for this derby and Arteta again kept faith with David Raya in goal over Aaron Ramsdale, while Gabriel Jesus and Eddie Nketiah started together in attack.Postecoglou handed a full debut to Brennan Johnson, who was immediately thrust into the action at a raucous Emirates when his right-footed effort was deflected over by Ben White.From the resulting corner Son had the ball in the net from Yves Bissouma’s wayward effort, but he was correctly adjudged to be offside.Spurs enjoyed the lion’s share of possession early on, but it was Arsenal who created the first clear-cut chance when Saka picked out Jesus at the back post and his half-volley was excellently tipped wide by Guglielmo Vicario.Vicario saved well again soon after when Destiny Udogie’s loose pass allowed Nketiah to get into the area.It perfectly encapsulated a difficult start for Udogie, who had struggled against Saka and been booked after 15 minutes.Saka’s influence continued to grow and the Gunners’ academy graduate helped break the