Harry Kane scored from the halfway line in the last minute to seal victory for Tottenham over Juventus.
Erik Lamela opened the scoring in the 30th minute before Gonzalo Higuain got the Italians back on level terms in the second half.
Cristiano Ronaldo gave Juventus the lead on the hour mark but Tanguy Ndombele came off the bench and made an instant impact by setting up Lucas Moura with just his fourth touch.
Juventus took the opportunity to introduce new signing Matthijs de Ligt, who replaced Leonardo Bonucci in the 63rd minute.