Gianluca Scamacca scored his first West Ham goal as they beat Danish side Viborg in their Europa Conference League play-off first leg at London Stadium.
The Italy forward, a £30.5m signing from Sassuolo, was handed his first start and took just 24 minutes to make an impact when he headed in following neat play on the left from fellow new arrival Maxwel Cornet.
It set the hosts on their way to a welcome first victory this season, having lost their opening two Premier League games without scoring a goal.
Jarrod Bowen zipped a second into the bottom corner from distance with 26 minutes to go but the visitors hit back immediately through Jakob Bonde's header.