Lucas Paqueta returned to lead the line but Gianluca Scamacca was among the Hammers players to endure tough afternoon at London Stadium.
Here’s how David Moyes’ side rated...
Lukasz FabiaÅski - 6
Made a decent save early on from Eberechi Eze’s free-kick and then did not have much else to do until reaction stop kept out potential Dawson own-goal.
Thilo Kehrer - 5
A couple of fine forays down the right and relationship with Jarrod Bowen is developing well. Dreadful touch led to Wilfried Zaha’s goal.
Kurt Zouma - 6
Flew under the radar without a recognised centre-forward to go up against. Steady.
Craig Dawson - 5
Aggressive defending against Zaha won possession in the build-up to the goal but then put Kehrer in it with poor pass before Zaha’s leveller. Almost scored own-goal late on.
Aaron Cresswell - 6
Tested by Palace’s fluidity of options on the right but did well until an unlucky deflection took Michael Olise’s winner in.
Declan Rice - 6
Had hearts in mouths when going down injured two weeks before the World Cup. Thankfully, okay to carry on.
Tomas Soucek - 5
Sloppy in possession and outshone by Cheick Doucoure in midfield battle before being replaced.
Jarrod Bowen - 6
Could have done with a showpiece performance as Gareth Southgate prepares to name his England squad but did not deliver it.
Lucas Paqueta - 7
Decent impact on return from injury. Set up opener and makes those around him better.
Said Benrahma - 7
Marked his 100th Hammers appearance with a terrific strike. Decision to take him off was hugely unpopular.
Gianluca Scamacca - 4
Ineffectual during first-half before being replaced at the break.
Michail Antonio (Scamacca 46’) - 5
Looked to have won late penalty but went down far too easily. Rubbish cross ruined counter-attack and led to Palace winner.
Flynn Downes (Soucek 64’) - N/A
Manuel Lanzini (Benrahma 64’) - N/A
Pablo Fornals (Paqueta 90’) - N/A
Unused: Areola, Coufal, Ogbonna, Aguerd, Emerson,