Four things we learnt as Arsenal beat Olympiacos to double their wins in the Champions League

An early goal by Gabriel Martinelli broke the deadlock in the 12th minute and it took 80 more minutes before the London side doubled their lead, through Bukayo Saka in injury time.

The 2-0 scoreline although is a fair result for the game, doesn't reflect the difficulty of the match, with Olympiacos creating a couple of really good chances that forced excellent saves out of David Raya.

The night was a very professional display by Arsenal, who doubled their wins in the Champions League, while Mikel Arteta got to rest some of his major stars, including Saka, Rice, Calafiori and Eze.

With that being said, here are four things we learnt from the match.

Absolutely dominant Arsenal in the first half 

Arsenal started the game incredibly strong, not allowing Olympiacos even a moment on the ball.

The Gunners seemed hungry from the first whistle and the opening 12 minutes were one-way traffic.

Martinelli's goal in the 12th minute seemed only a matter of time.

The Greek side did improve after Arsenal's goal and finally started to get some touches on the ball.

This culminated in the 20th minute when the visitors had an excellent chance to equalise, when ex-Wolves man Daniel Podence struck a beautiful volley, only to be saved excellently by David Raya.

Although from that point onwards the match was more balanced, it was evident that when the home side wanted to turn up the intensity, they could really cause issues for their opponents.

Although Saka's goal in injury time wasn't necessarily coming based on the two teams' performances, it did kill off any comeback the Greeks may have had in mind.

Martin Odegaard was a midfield maestro

Martin Odegaard showed his class by pulling all the strings in the heart of Arsenal's attack.

The Gunners' captain seemed to be able to do whatever he wanted with the ball at his feet, going past defenders with ease and carving open the Greek side's defence with excellent through balls.

This was most evident with Arsenal's goal, when the Norwegian played an excellent ball through to Viktor Gyokeres.

The 26-year-old took the ball just in front of the halfway line, managed to drag out the defenders and played a pinpoint pass through to Viktor Gyokeres.

Even after the goal, Odegaard seemed to be the person who could create the most for the Gunners, by running at the defence and knowing when exactly to release the ball.

Viktor Gyokeres is a tank

Viktor Gyokeres had one of his best performances in an Arsenal shirt so far since his transfer in the summer.

The Swede dominated his opponents with his physicality - at moments leaving them unable to do anything to stop him.

Arsenal's first goal, although created by Odegaard's excellent through ball, saw Gyokeres wrestle his defender off the ball, making it appear as if it was a man against a boy.

The 27-year-old barged Olympiacos's right-back Costinha and shielded the ball brilliantly, and was unlucky not to score himself.

The visitor's keeper Kostas Tzolakis made an excellent save, but the ball deflected off the post and into the path of Martinelli who had an easy tap in.

Professional Arsenal got the job done

Although there were some nervy moments, namely Podence's brilliant volley and Ayoub El Kaabi's offside goal, Arsenal played as much as they needed to in order to get the three points.

The Gunners came out flying, got their goal and then controlled the tempo of the game.

In the second half particularly, the home side turned on the screws a couple of times and created some big chances, but were also happy to sit back and let their opponents break them down.

Mikel Arteta's side, which is known for conceding very few goals - only three this season so far - allowed Olympiacos to have more of the ball and create some chances.

But they didn't consistently seem under threat and outside the odd chance here and there, were comfortable even sitting back.

Arteta will hope that his side can continue this three-game win streak into their Premier League clash against West Ham on Saturday and push for trophies on all fronts this season.