The Danish shot-stopper was in inspired form for the champions, as they held off late pressure from the Hammers to clinch three points
West Ham's late onslaught had Craig Shakespeare's heart racing after Kasper Schmeichel's remarkable second-half performance allowed Premier League champions Leicester City to hold on to a slender 3-2 win at London Stadium.
Leicester initially showed few signs of weariness following their Champions League exploits against Sevilla on Tuesday, stunning West Ham with a brilliant start which saw them two goals up inside seven minutes thanks to Riyad Mahrez and Robert Huth.
Manuel Lanzini pulled one back with a fine free-kick, before Jamie Vardy restored Leicester's two-goal advantage just before the break.