Mauricio Pochettino said on Friday 'the competition doesn't wait' and the players were initially hit by a whirlwind from Bournemouth.
Junior Stanislas hit the crossbar before opening the scoring and it took until midway through the half for us to start turning the tide.
We then lost Harry Kane to injury but when serious questions were asked, the team answered in style.
Dele levelled on 35 minutes, Heung-Min Son made it 2-1 (62 minutes) and then 3-1 (87) before Serge Aurier, who set up the first goal, scored the fourth from fellow full-back Kieran Trippier's assist in added time.