Premier League old boys Edin Dzeko and Henrikh Mkhitaryan netted early goals to leave AC Milan needing a Liverpool-style comeback to return to Istanbul.
This mad Milan derby was a million miles away from the old stereotype of cagey Italian tactical battles with 29 shots and defensive blunders. Seven-time winners Milan had conceded only one goal at home in their previous six semi-finals - and only once in their last six Champions League ties this season.
But Dzeko, who started ahead of Romelu Lukaku, and Mkhitaryan both scored in a crazy opening 11 minutes. Inter Milan looked like scoring on every attack as ex-Chelsea defender Fikayo Tomori, who was booked after the break, showed why he has started only one match for England under Gareth Southgate.