Guglielmo Vicario knew, deep down, that he'd gone too far. He was lost in the heat of battle, where emotions run high and tempers can flare, but still the Tottenham goalkeeper had to admit he was wrong.
Lucas Bergvall, the 18-year-old Swede on debut, had given the ball away in second-half stoppage time in Spurs' opening game against Leicester and forced the Italian into making a late save to keep the scores level.
Vicario let rip. He jumped to his feet and screamed at the teenager, running towards him and punching the air, his eyes wide and manic.