Half-time reading.

44 mins: Russo gets beyond Heaps in midfield and is pulled back, earning the Lyon player a yellow card.

The goal is still the only shot on target of the match.

42 mins: Lyon try to pump a free-kick into the box but Wubben-Moy is there to clear the danger.

Arsenal are starting to show more intent but Fox and Foord have crossed wires, gifting Lyon a goal-kick.

40 mins: Caldentey has another chance to swing one in from a corner but one again she does not beat the first defender.

McCabe pings a cross to Foord at the back post but the Australian’s looping header goes just wide.

38 mins: Scrap that booking for Lawrence, it was in fact Hegerberg who was yellow carded for dissent.

36 mins: Hegerberg latches onto a pass and drives into the box but is held up by Wubben-Moy, who does well and then clears downfield.

34 mins: Lyon are committing a lot of fouls. Lawrence is the first in the book for taking down Foord.

32 mins: Arsenal are yet to have a shot on target, such are their struggles in the final third. It may explain why the atmosphere sounds completely flat.

Smith gets the better of Yohannes who trips the Arsenal winger. She is lucky to not be booked.

30 mins: Lyon are doing their best to make this game complete static. No one moves for a few seconds, such is the success of their attempts to slow the match down.

28 mins: Renard bundles over Russo near the halfway to give Arsenal a free-kick. Arsenal work into Smith but she is easily dispossessed by Brand.

26 mins: Diani’s cross looks dangerous but takes a flick off a defender, allowing Van Domselaar to take an easy catch.

24 mins: Lyon are keeping to the ball, subduing the home crowd and the Arsenal players in the process. They have the upper hand and will be keen to slow things down.

22 mins: Arsenal keep getting into promising positions but then play mediocre passes when it matters.

Caldentey decides to shoot from 30 yards or so but she pings it well over the bar.

20 mins: That was all a bit rubbish from Arsenal. This is a Champions League semi-final and they have given the opener away.

It is very early in this two-legged tie, so no need to panic.

18 mins: Lyon get into a decent position but the cross from the right is a poor one, flying over everyone’s head and out for a goal kick.

16 mins: Arsenal build from the back thanks to some smart passing but McCabe’s pass is not read by Foord, allowing the ball to drift behind.

14 mins: Blackstenius uses her strength to turn Renard inside the box. The defender just about recovers, at the cost of a corner. Caldentey swings in into the front post but it is a poor corner, allowing for an easy clearance.

12 mins: A long ball over the top forces Endler to sprint out of her box and head clear. There is a half chance to shoot from about 50 yards but the option is declined.

10 mins: Both teams have settled quickly. Lyon are penalised for an offside, it wasn’t particularly tight because she was half a yard onside. We just need the officials to settle and we could be in for a decent game.

8 mins: Lyon make it into the Arsenal box and just before Hegerberg can get a shot away, Fox puts in a tackle and earns a goal kick thanks to a ricochet.

6 mins: Arsenal are enjoying a good spell of possession but Russo cannot find a pass through the Lyon defence.

Another attack builds and concludes with Foord dragging a shot wide from inside the box.

4 mins: Lyon put on some pressure but Arsenal break up field through Fox but the attack comes to an end when Smith is tackled.

2 mins: Not much happening in the opening stages.

Gordon emails: “For me, Lyon will take this semi final. They will not gift Arsenal three goals over the tie as they did in last year’s semi- finals. Also, Arsenal are fortunate to have McCabe playing today; she should, of course, have been sent off for a hairpull against Chelsea in the last round, and be suspended for this match. Bayern Munich player Kett was red-carded for a hairpull yesterday in the other semi, and she’s suspended from the second leg v Barcelona.”

No Beth Mead and Chloe Kelly on the bench for Arsenal, leaving the bench looking quite light.

Renee Slegers: “We had really good collaboration with England, she was ready for 45 mins against Iceland, she did really good and came back ready. I am really happy she is available today.

“It will never be easy in a semi-final of the Champions League. I have huge respect for Lyon. We want to embrace this moment and give it everything we have.”

Jonatan Giraldez: “We know we have to do a lot of good things.

“I love the pressure, it is the energy I need to move forward. I am very honoured to have possibilities like this.”

It is a huge boost for the Gunners to have Williamson back in the heart of defence. Could this be the inspiration they need to beat Lyon at home for the first time?

A lovely day for a semi-final.

The Guardian has kicked off a new chapter in puzzles with the launch of its first daily football game, On the ball. It is now live in the app for both iOS and Android … so what are you waiting for?

Pre-match reading.