West Ham have claimed their third straight win to move to the top of the Premier League for at least one night by beating Luton 2-1 thanks to goals from Jarrod Bowen and Kurt Zouma.
Kenilworth Road hosted a top-flight match for the first time since 1991-92 - the season before the Premier League was founded - but Luton couldn't mark the occasion by earning their first points since promotion.
Bowen gave West Ham the lead in the 37th minute, meeting Lucas Paqueta's perfectly judged cross with a header that went straight at goalkeeper Thomas Kaminski and bounced into the net.
Having also netted at Bournemouth and Brighton this season, the England forward became the first West Ham player since 1930-31 to score in three straight top-flight away games.
Luton, who have lost their opening two league games, toiled without offering much threat up front and fell further behind in the 85th when Zouma got himself free at a corner to power in a header from James Ward-Prowse's cross.
Luton grabbed a consolation through centre back Mads Andersen in the second minute of stoppage time.
West Ham have 10 points from their four matches and are a point ahead of Manchester City, who play their game in hand at home to Fulham on Saturday.
Luton have played only three games because their home meeting with Burnley scheduled for round two was postponed owing to Kenilworth Road not being ready to host the match.