An agitated David Moyes criticised the officials and substitute Michail Antonio after West Ham were beaten 2-1 by Arsenal at the London Stadium.
Moyes made five changes once again with one eye on the big Europa League semi-final second leg in Frankfurt to come on Thursday night.
The Scot elected to start with Jarrod Bowen up front.
Arsenal have become a threat from set-pieces under Mikel Arteta.
And West Ham were without powerful players such as Craig Dawson (suspended), Tomas Soucek and Michail Antonio (both rested from the start).
That played into Arsenal’s hands when they took the lead through the lanky Rob Holding after a series of corners.
West Ham – as they have had to so many times this season – rallied and got back into it before half-time when Declan Rice sprayed the ball out wide for Vladimir Coufal who found Bowen in the box.
The striker for a day cut across the ball to bend it away from Aaron Ramsdale and into the corner.
West Ham were seriously poor in the second half, though, as Arsenal took the lead following more sloppy defending after a corner.
Gabriel stopping to nod home unmarked at the far post when the ball was turned back in by his fellow Brazilian Gabriel Martinelli.
The introduction of Antonio and Soucek had zero impact on proceedings. And West Ham brainlessly engaged in some handbags with the Gunners at the end as they visitors sought to waste time.
West Ham’s shallow squad has been brutally exposed during the run in.
But after resting Antonio in games of late Moyes was disappointed with his main striker’s efforts in the second half.
The Hammers are now looking almost certainties for Europa Conference League football if they do not qualify for the Champions League by winning the Europa League.
Speaking to Sky Sports after the game, an Agitated Moyes criticised the officials and Antonio for a lack of impact in defeat to Arsenal.
The Scot questioned whether Holding’s goal should have stood after it appeared to come off the defender’s arm. And he also said Ramsdale’s challenge on Bowen was reckless.
Agitated David Moyes criticises officials and Michail Antonio for lack of impact in defeat to Arsenal
“I actually think we played better before we brought the players on to be honest,” Moyes told Sky Sports.
“We had better control of the game. I think we tried it because I think we felt we were struggling to get any real attacking purpose going.
“I needed Mich (Antonio) to be a threat in the box in that period of the game. I thought we’d controlled pretty good possession at times and we had some good stuff.
“But I just wanted a little bit more presence in and around the box (from the substitutes).
“I’m the manager, I’m the one that has to deal with the defeat and sort it out. You don’t get rid of it that quick.”