Chelsea threw away a two-goal advantage in pre-season to share the spoils with London rivals Tottenham at Stamford Bridge.
A brace from Hakim Ziyech had Chelsea seemingly coasting to victory at Stamford Bridge before Tottenham fought back to earn a 2-2 pre-season draw on Wednesday.
Goals either side of half-time from Ziyech gave Chelsea a well-deserved two-goal lead but Lucas Moura and Steven Bergwijn cancelled out the Blues' advantage with second-half finishes of their own.
Having paraded their Champions League trophy in front of the near-capacity crowd prior to kick-off, Chelsea got off to an emphatic start with Ziyech blasting in low from the edge of the area to capitalise on Lucas' laziness in possession.
Timo Werner thought he had added a second after rounding Pierluigi Gollini, though the offside flag denied him – with no VAR in operation, the Germany forward could not argue with the decision, despite seemingly looking onside.
Tottenham, who were still without the absent Harry Kane, named a strong starting-11, including Son Heung-Min and Dele Alli, but fell two behind when Ziyech drilled in a second just two minutes after the break.
Lucas responded for Nuno Espirito Santo's side, netting a third in pre-season courtesy of a fortuitous looping deflection off Antonio Rudiger wrong-footing Edouard Mendy.
Bergwijn levelled things up 14 minutes later with a thumping finish past Mendy after smart link-up play down the left flank by Moura and Son.
Having dominated for large periods the draw may frustrate Chelsea, who next face Villarreal in the European Super Cup on August 11, while Tottenham round-off their pre-season preparations against Arsenal three days before.