Conor Gallagher came on as a substitute as Atletico Madrid scored a 90th-minute winner against RB Leipzig in their Champions League opener.

Benjamin Sesko headed the German visitors into a fourth-minute lead, before Antoine Griezmann equalised after 28 minutes with his 37th goal in the competition.

France World Cup winner Griezmann scored from 12 yards with a volleyed effort and was denied a second goal by a fine save from RB Leipzig keeper Peter Gulacsi.

It was Griezmann who set up the dramatic late winner as his cross picked out Jose Maria Gimenez for a downward header into the net.

England midfielder Gallagher, who moved to Atletico in August for about £33m, came on in the 63rd minute with the game 1-1.

He is the second English player to feature in the Champions League for Atletico after Kieran Trippier.

While RB Leipzig host Juventus next in the competition on 2 October, Atletico Madrid are away to Benfica on the same date.