Consummately professional, ruthlessly efficient and clinical with the chances that came their way, Arsenal showed their class in winning 2-0 at Athletic Club in Matchday One of the Champions League.
Mikel Arteta's side bagged the win with goals from second-half substitutes Gabriel Martinelli and Leandro Trossard.
Martinelli scored just 36 seconds after being introduced, with Belgium forward Trossard putting him through on goal in the 71st minute.
The Brazil winger then returned the favour, beating his man and giving the ball to Trossard to squeeze in the second in the 86th minute.
The Gunners will be huge favourites to beat an Olympiakos side who were held to a goalless draw at home to Cypriot champions Pafos last week.
Pafos had right-back Bruno Felipe dismissed in the 26th minute for collecting two yellow cards - but Olympiakos could not break the Champions League debutants down.
DAZN News has all the information ahead of Arsenal v Olympiakos.
Arsenal vs Olympiakos will take place at 8.00pm BST on Wednesday, October 1 in the Champions League
That means that fans watching in the US and Canada can see the game at 3pm ET and 12pm PT, while it's a 7am kick-off on Thursday, October 2 for fans in New Zealand.
Arsenal vs Olympiakos will take place at Emirates Stadium, London.
It has been the home stadium of Arsenal since its completion in 2006 and has a capacity of 60,704.
The England playmaker joined the Gunners from London rivals Crystal Palace this summer for a fee of deal worth £60million, including £8million in add-ons, for the 27-year-old to become their seventh summer signing.
Sporting director Andrea Berta described Eze as a "creative and explosive talent with huge technical quality" and he has already shown glimpses of his undoubted quality in an Arsenal jersey.
Getty ImagesThe Portuguese winger, 29, rejoined the Greek giants for a third spell at the club during the summer.
In January 2020, he signed with Wolves but returned to Olympiakos on loan for the 2023–24 season, winning the Conference League.
He moved to Al-Shabab in September 2024, returning to Olympiacos for a third spell in 2025.
It is difficult to see past a routine home win in this match.
Mikel Arteta's men have genuine hopes of going all the way in the Champions League and they should brush Olympiakos aside with minimum fuss.
Prediction: Arsenal 3-0 Olympiakos
Tuesday 30 September
Wednesday 1 October

Soccer fans in the US can watch select matches in the Champions League in Spanish language as part of their DAZN subscription package.
Between September 25 - October 3, 2025 new customers can get a 20% discount on annual subscription.
An annual upfront payment is now $179.99 reduced from $224.99, while paying monthly for 12 months is $15.99 (down from $19.99) and also provides access to 185 fight nights a year across boxing, MMA, PFL, BKFC, Glory and much more.
CBS has coverage of every Champions League match in English language this season. You can get more details and subscribe to CBS's Champions League coverage here.
Fans can watch extra Champions League games in Spanish on ViX. A selection of those matches are also available on UNIMÁS and TUDN.
Every Champions League game during the 2025-26 season is streamed in high-definition and comes as part of a DAZN subscription.
An annual subscription costs $14.99 per month for 12 months and also provides access to 185 fight nights a year across boxing, MMA, PFL, BKFC, Glory and much more.
Watch every game of the Champions League this season in Canada with a DAZN subscription.
There are three subscription options, offering differing selections of sports in each. Access to every Champions League match is included in all three package offerings, ranging from $29.99 to $44.99 per month (for 12 months)
