The Hammers have amassed maximum points thus far in Group A, continuing their impressive European form under David Moyes after last season's fairytale Conference League triumph.
Still, this perhaps represents their hardest test in the group to date and Moyes will need to see an improvement from the side who lost 4-1 to Aston Villa in the Premier League on Sunday.
Olympiacos, meanwhile, saw their latest chaotic derby against fierce rivals Panathinaikos abandoned at the weekend after a player was hit by a firework.
Date, kick-off time and venue
Olympiacos vs West Ham is scheduled for a 5:45pm BST kick-off time today on Thursday October 26, 2023.
The Georgios Karaiskakis Stadium in Piraeus will host the game.
Where to watch Olympiacos vs West Ham
TV channel: The game will be broadcast live on TNT Sports 1 in the UK. Coverage starts at 5pm.
Live stream: Subscribers will be able to watch on a live stream via the TNT Sports website and Discovery+ app.
Live blog: Follow all the action with Standard Sport’s dedicated match blog. Malik Ouzia will be providing expert analysis from Greece.
Olympiacos vs West Ham team news
Olympiacos will be without Andreas Ndoj, who was sent off against Backa Tapola last time out and is therefore suspended.
Daniel Podence, on loan from Wolves, should start though, with the winger in fine form having scored four goals already for his new club.
The Hammers, meanwhile, could start Mohammed Kudus after Moyes declared his temptation to turn to the Ghana international more regularly.
Ben Johnson and Aaron Cresswell are the only injury concerns at this stage, though both could be in the squad after travelling.
Olympiacos vs West Ham prediction
Olympiacos is a difficult place to go but West Ham are seasoned operators at this level now and look good value for at least a battling draw.
Head to head (h2h) history and results
Olympiacos wins: 0
West Ham wins: 1
Olympiacos vs West Ham latest odds
Olympiacos to win: 2/1
West Ham to win: 13/10
Odds via Betfair and subject to change.