It’s time for today’s night session. We’ve got the reigning champion, Iga Swiatek up against 18-year-old Marta Kostyuk. The Ukrainian is ranked at 81 in the world. The players are due on Chatrier from 20:00 BST.

BREAK! – SWIATEK 1-2 KOSTYUK. You wonder how much their knowledge of each other in their junior days is impacting on events so far. Swiatek doesn’t look as assured as she usually does. The defending champion drags a forehand well wide to cough up double break point and then cannons a backhand straight into the middle of the net to come unstuck after saving the first.

SWIATEK 1-1 KOSTYUK. Swiatek snatches at a return and slaps the forehand into the net. The Pole is a little frustrated as she threw in a poorly executed drop shot on break point and then had another wiped out as Kostyuk found her groove on the backhand. It looked tricky at times but must go down as a fine hold for the 18-year-old in the end.

SWIATEK 1-0 KOSTYUK. Confident and efficient. Not even a double fault can hamper Iga as she doesn’t give Marta much to take a swing at.

Swiatek arrives on court in a good mood. She'll no doubt have been impressed by how her hero, Rafael Nadal saw off Jannik Sinner earlier. Can she produce a similarly strong performance?

Kostyuk is still riding the crest of a wave after defeating former champion, Garbine Muguruza in round one. She's into her first last 16 clash at a major but the Ukrainian is refusing to get carried away. She said: "Honestly in my head I don't feel like I'm in the fourth round at all. It's just another win for me. It's just another match for me. But it honestly doesn't feel like I'm in the fourth round. I don't even have the feeling."