Two debut goals Patrick Vieira inspired Inter Milan to an extraordinary victory in the Italian Super Cup, recovering from 3-0 down to win 4-3 after extra time.
The France captain started the Inter fightback, heading in on the stroke of half-time, before grabbing a close-range equaliser on 75 minutes.
Luis Figo secured the win in front of a rapturous crowd at the Giuseppe Meazza with a fine free-kick five minutes into extra time. Roma's misery was complete when Christian Chivu was sent off for a professional foul on Figo five minutes later.
Following the Calciopoli corruption verdicts, Inter were de facto double winners with Roma runners-up in both league and cup.
But Luciano Spalletti's side looked intent on upsetting the form book as they flew out of the traps, going in front through Brazilian winger Mancini on 13 minutes.
Young midfielder Alberto Aquilani added two fine strikes of his own as Inter were torn asunder on home territory. Italy left-back Fabio Grosso was given a particularly torrid time by Rodrigo Taddei and Mancini while Javier Zanetti made an uncharacteristic error for the second Roma goal.
Vieira's header gave Inter a glimmer of hope but the resurgence did not start in earnest until Hernan Crespo came on for the disappointing Adriano.
The loan signing from Chelsea headed the second soon after the hour mark, before Vieira levelled, reacting quickly to a mis-hit Zlatan Ibrahimovic shot and firing fortuitously in off the bar.
Roma were visibly deflated, and it came as no surprise when Figo curled a 22-metre free-kick past Doni into the left corner early in extra time, before Chivu's red card put paid to any hope of a Roma response.