West Ham moved a step closer to reaching the Europa League knockout stages with a narrow victory over Olympiakos at London Stadium.
Lucas Paqueta's second-half volley - from James Ward-Prowse's fine pass - awarded after a video assistant referee review, settled a tight contest in the Hammers' favour.
David Moyes' side lead Group A on nine points, level with Germany's Freiburg.
Olympiakos are third, five points adrift with two group fixtures left.
More to follow
Follow live updates hereHow to play
Rate players out of 10 throughout or after the game. The rater will close 30 minutes after the final whistle.
Rating range key1 = Give it up10 = Pure perfection
West Ham United
Squad number1Player nameFabianski
Squad number5Player nameCoufal
Squad number15Player nameMavropanos
Squad number27Player nameAguerd
Squad number33Player nameEmerson
Squad number19Player nameÁlvarez
Squad number7Player nameWard-Prowse
Squad number14Player nameKudus
Squad number10Player nameLucas Paquetá
Squad number22Player nameBenrahma
Squad number20Player nameBowen
Squad number17Player nameCornet
Squad number28Player nameSoucek
Squad number45Player nameMubama
Olympiakos
Squad number1Player namePaschalakis
Squad number23Player nameRodinei
Squad number25Player namePorozo
Squad number45Player nameRetsos
Squad number3Player nameOrtega
Squad number32Player nameHezze
Squad number15Player nameAlexandropoulos
Squad number4Player nameCamara
Squad number56Player nameDaniel Podence
Squad number22Player nameJovetic
Squad number7Player nameFortounis
Squad number9Player nameEl Kaabi
Squad number10Player nameGustavo Scarpa
Squad number19Player nameMasouras
Squad number21Player namePep Biel
Line-ups
West Ham
Formation 4-2-3-1
1Fabianski5Coufal15Mavropanos27Aguerd33Emerson19ÁlvarezBooked at 19minsSubstituted forSoucekat 80'minutes7Ward-Prowse14KudusBooked at 28minsSubstituted forMubamaat 89'minutes10Lucas Paquetá22BenrahmaSubstituted forCornetat 84'minutes20BowenBooked at 90minsSubstitutes
2Johnson3Cresswell8Fornals9Antonio17Cornet18Ings21Ogbonna23Areola24Kehrer28Soucek45Mubama49AnangOlympiakos
Formation 4-3-3
1Paschalakis23de Almeida25PorozoBooked at 83mins45Retsos3Ortega32HezzeSubstituted forBiel Mas Jaumeat 90'minutes15AlexandropoulosSubstituted forFurtado Scarpaat 76'minutes4CamaraBooked at 90mins56PodenceBooked at 38minsSubstituted forMasourasat 76'minutes22JoveticSubstituted forEl Kaabiat 56'minutes7FortounisBooked at 90minsSubstitutes
8Iborra de la Fuente9El Kaabi10Furtado Scarpa11El Arabi18Marín Ruiz19Masouras20Carvalho21Biel Mas Jaume74Ntoi88Tzolakis98Solbakken99PapadoudisLive Text
Match ends, West Ham United 1, Olympiakos 0.
Second Half ends, West Ham United 1, Olympiakos 0.
Jarrod Bowen (West Ham United) is shown the yellow card.
Mady Camara (Olympiakos) is shown the yellow card.
Konstantinos Fortounis (Olympiakos) is shown the yellow card.
Foul by Vladimír Coufal (West Ham United).
Konstantinos Fortounis (Olympiakos) wins a free kick on the left wing.
Delay over. They are ready to continue.
Delay in match because of an injury Jarrod Bowen (West Ham United).
Substitution, Olympiakos. Pep Biel replaces Santiago Hezze.
Substitution, West Ham United. Divin Mubama replaces Mohammed Kudus.
Offside, Olympiakos. Francisco Ortega tries a through ball, but Konstantinos Fortounis is caught offside.
Attempt missed. Rodinei (Olympiakos) left footed shot from the right side of the box is close, but misses the top left corner. Assisted by Gustavo Scarpa.
Foul by Lucas Paquetá (West Ham United).
Mady Camara (Olympiakos) wins a free kick in the attacking half.
Mady Camara (Olympiakos) hits the right post with a header from the right side of the six yard box. Assisted by Jackson Porozo following a corner.
Attempt missed. Jackson Porozo (Olympiakos) header from the left side of the six yard box misses to the right. Assisted by Konstantinos Fortounis with a cross following a corner.
Corner, Olympiakos. Conceded by Konstantinos Mavropanos.
Attempt missed. Konstantinos Mavropanos (West Ham United) header from the centre of the box misses to the right. Assisted by James Ward-Prowse with a cross following a set piece situation.
Substitution, West Ham United. Maxwel Cornet replaces Saïd Benrahma.