Ghanaian defender,
Amartey, 21 lasted the entire duration of the game when coach Claudio Ranieri continued to keep faith in him as the right replacement of Ngolo Kante.
An cross from Ryad Mahrez was nodded in by his Algerian teammate Islam Slimani in the first half of the game.
The English champions are leading the pack with six points, following an away win in their maiden UEFA Champions League game.