Nottingham Forest secured a famous win as Taiwo Awoniyi scored the only goal to beat West Ham as Premier League football returned to the City Ground after a 23-year absence.
Goalkeeper Dean Henderson was Forest's other hero, denying Declan Rice with a second-half penalty save.
The Hammers could also reflect on two strikes from distance that hit the crossbar and another excellent Henderson save from Tomas Soucek as they started the season with successive defeats.
However, for Forest and their boss Steve Cooper, it was another unforgettable day for a club who were bottom of the Championship less than 12 months ago.