There was a Declan Rice injury worry as the Hammers talisman was seen jarring his knee during the West Ham win over Everton.
West Ham won a strange match 2-1 with goals from Aaron Cresswell and the returning Jarrod Bowen.
Everton saw Michael Keane sent off in the second half after picking up two yellow cards.
But for West Ham fans and David Moyes there will be a concern that star man Rice may have picked up an injury.
At the exact same time last season Rice sustained a knee injury while playing for England.
So West Ham hearts were in mouths over a Rice injury worry as the talisman was seen jarring his knee during the second half.
Declan Rice injury worry as talisman seen jarring his knee during West Ham win over Everton
Rice went to change direct and seemed to get his studs caught in the turf.
For the next 10 minutes TV cameras picked up Rice walking gingerly and continuously rubbing his knee.
The West Ham midfield ace did go on one of his lung-busting runs after the incident.
But he did not look entirely comfortably after what we can only hope is just a niggle.
With the huge Europa League quarter-final first leg against Lyon on the horizon this Thursday, the last thing West Ham want is to lose Rice.
Moyes will already be without Manuel Lanzini, who is suspended for the first leg.
The big positive is that Rice did complete the full 94 minutes. That indicates the player felt ok to carry on.
But West Ham fans will be hoping there are no after effects on further inspection after the game.
The London Stadium pitch – which has been the subject of criticism from Moyes in the past – did seem to be extremely dry.
West Ham now have four days to get ready for the visit of Lyon.
The Ligue 1 side will be without their key defensive midfield Maxence Caqueret through a knee injury.
But they have been boosted after UEFA allowed them to register brilliant Brazilian winger Tete following his FIFA loophole window arrival from Ukraine club Shakhtar Donetsk.