Kelechi Iheanacho's late penalty has sealed a 1-0 win for Leicester City against Manchester City in the Community Shield at Wembley Stadium.
Pep Guardiola introduced the Premier League champions' record signing Jack Grealish in the second half, but it was former City striker Iheanacho who produced the game's decisive moment.
The Foxes striker slotted his spot kick past City goalkeeper Zack Steffen after drawing a clumsy foul from Nathan Ake inside the area in the 89th minute.
Brendan Rodgers' FA Cup champions produced an excellent performance at Wembley, with Harvey Barnes causing problems down the left.
Both sides were missing a multitude of first team players through injury or holidays following international commitments.
Ilkay Gundogan came close to giving City an early lead with an excellent free kick from 25 yards, but Kasper Schmeichel made an excellent diving save to tip the German's shot over the crossbar.
The lively Jamie Vardy had a number of chances at the other end, forcing Steffen to tip one low shot from distance around the post before hitting an instinctive half-volley straight at the City 'keeper when Barnes' deflected shot fell kindly in his path.
Vardy then squandered a huge opportunity to give the FA Cup champions the lead late in the first half, but directed his half-volley at the back post too close to Steffen after a lovely cross from Barnes.
The veteran striker's effort was diverted on to the post by Steffen's trailing legs, and the sides went into the dressing rooms scoreless after an entertaining opening 45 minutes in London.
City teenager Samuel Edozie came agonisingly close to giving Pep's side the lead early in the second half, but his curling shot flew narrowly wide, before Mahrez and Gundogan fired off target from promising positions.
Guardiola introduced Grealish midway through the second half, with the England international slotting into his trademark position on the left.
Both sides made plenty of changes as the game wore on, with Rodgers bringing on strikers Patson Daka and Iheanacho for Leicester.
The latter cane back to haunt his old club with a penalty at the death, securing the Foxes' second trophy under Rodgers.