Aston Villa repeated their famous 1982 European Cup final win over Bayern Munich as Jhon Durán's winner beat the German giants 1-0 on Wednesday.
The Colombian striker caught Manuel Neuer off his line 11 minutes from time to make it two wins from two games for Villa in their first experience of Uefa Champions League football for 41 years.
Bayern arrived at Villa Park unbeaten and in free-scoring form since Vincent Kompany took charge.
After a comfortable 3-0 win over Young Boys in Switzerland two weeks ago, the visit of the six-time European champions was the sort of glamour tie Villa fans had been relishing and it did not disappoint.
Harry Kane overcame an ankle injury that forced him off late on in Bayern's 1-1 draw against Bundesliga champions Bayer Leverkusen at the weekend.
Bayern had averaged over four goals a game in their opening seven matches under Kompany, including a 9-2 thrashing of Dinamo Zagreb to open their Champions League campaign.
They dominated the ball early on, but Kane's header from an offside position that was well saved by Emi Martínez was the closest they came to breaking through Emery's well-organised defence.
Villa did have the ball in the net midway through the first half when Torres prodded in at the back post from a free-kick.
Michael Olise was another of Bayern's stars making a return to England and the former Crystal Palace winger was only denied the opener before half-time by a stunning save from Martínez.
Instead, it was Villa's own super sub that came on to win the game. Five of Duran's six goals this season have come as a substitute.
Meanwhile, holders Real Madrid suffered a shock 1-0 loss to Lille.
Kylian Mbappé made his return from injury for Madrid in France as a substitute but he was upstaged by Jonathan David, whose penalty condemned Carlo Ancelotti's side to a first loss in all competitions since January – a run spanning 36 matches.
"It hasn't been a very good night for us, we shouldn't look for excuses," said Ancelotti. "We could have equalised at the end but it wouldn't have been deserved."
Canada international David, scorer of a hat-trick in Ligue 1 at the weekend, buried his spot-kick at the end of the first half after Eduardo Camavinga used his arm to block a strike from Edon Zhegrova.
Lille goalkeeper Lucas Chevalier produced a string of late saves as the French club clung on for a famous win over the record 15-time European champions. (AFP)