Olympique Lyonnais hold a comfortable 9-1 lead going into their second leg tie with Slavia Praha after an incredible performance.
Kateřina Svitková's goal at the end of the first-half was the only moment of joy that the Czechs could come away with.
Camile Abily, Griedge M'Bock Bathy and Ada Hegerberg all scored twice, with Louisa Nécib, Eugenie Le Sommer and Amel Majri also getting on the scoresheet.
Unsurprisingly, Lyon were dominant in the opening 10 minutes and enjoyed near exclusive possession of the ball. Despite that, they couldn't convert the early pressure into chances. Eugenie Le Sommer's persistence paid off when Barbora Sladká failed to hold onto a shot and she grabbed the rebound, but Elodie Thomis couldn't convert the cutback.
Le Sommer was Lyon's bright spark early on and came closer still to opening the scoring when she turned her marker on the edge of the box. A firm shot looked destined for the bottom corner but Sladká made a super save. Slavia were not offering anything in attack, though could take solace from a solid defensive effort.
Le Sommer gives Lyon the lead
It seemed like a moment of magic would be required for the hosts to take the early lead they were after, and Louisa Nécib did just that. The midfielder was out on the left when she collected the ball, posing no real danger to the Czech side. However, a stunning right foot drive found the far top corner and left the full-stretch Slavia stopper powerless to prevent Lyon from taking the lead.
Things went from bad to worse for the visitors, as Le Sommer deservedly got on the scoresheet five minutes later. Camile Abily picked up possession in space and drove forward before picking out Le Sommer at the back post. The forward chested down and controlled, then fired into the bottom corner. What had looked to be a promising start was crushed in a matter of moments.
Hosts hit four before the break, Slavia pull one back
Lyon were cruising and turned on the style, with Sladká doing her bit to keep Slavia in the game. Even with her best efforts, the French champions would add a third and fourth goal in quick succession. Le Sommer did brilliantly to slide in Abily on the left, as the captain crossed to the open and free Ada Hegerberg to head home into an open net. Griedge M'Bock Bathy's goal was less stylish but she wasn't complaining when Nécib's free-kick was punched onto her head and in by Sladká.
There would, however, be something for the Czech outfit to cheer in the first half. Klára Cahynová found space between the lines and played a perfect chipped pass into the path of Kateřina Svitková. The latter showed great composure to bring the ball down with her chest and fire into the opposite corner of Sarah Bouhaddi's goal to reduce the deficit to three at the break.
French champions continue to score in bursts
It was a similar story after the restart and Lyon added a fifth just eight minutes into the second half. M'Bock Bathy was quickest to pounce after Le Sommer rattled the bar from Abily's knockdown, with the defender making no mistake with a calm finish from a few yards out.
Another goal came their way three minutes later, as Thomis got her first and Lyon's sixth. Nécib's corner, once again, caused havoc in the Slavia defence; Hegerberg was able to help the ball on to the back post and Thomis, who had the simple task of heading home just inches from goal. The left-back missed a similar chance moments later and Le Sommer prodded wide, with the hosts hunting for more.
Abily bags a brace, Hegerberg makes it nine
Lyon continued to come forward with wave after wave of attack, as they seemed determined to rack up as many goals as possible. Captain Abily would get in on the attack in the latter stages of the game, as a free-kick gave her a deserved goal. The midfielder lifted the ball up and over the wall with pace and precision, and Sladká was unable to stop the shot from creeping inside the post.
While her first goal might have been good, her second was great. After missing the initial ball in from Majri, Thomis was on hand to lift the stray cross back into the box. It looped up in the air for what seemed an age, with Abily taking full advantage by steadying herself and scoring a spectacular bicycle kick.
Hegerberg, who had been quite quiet, was able to grab a brace of her own after slamming home Nécib's through ball. That capped off the scoring and a fine Lyon performance, who travel to the Czech capital with an impressive lead. Slavia will be hoping to avoid a repeat scoreline, as their Champions League dream looks almost certain to end next week.