They're repairing a barrier after a shunt in F2 just before.
Verstappen on top ahead of Perez and Albon.
He extends his advantage over Perez to 0.4s.
Perez pips Albon for second.
Big lap from Albon in the Williams.
0.4s ahead of Leclerc at the top of the timesheets - a dominant showing so far from the Dutchman.
He only manages third on the softs - less than a tenth shy of Leclerc.
0.039s ahead of Ocon.
Strong lap from the Alpine driver to take top spot ahead of Sainz - less than a tenth clear.
Sainz, Leclerc, Verstappen, Perez, Tsunoda, Sargeant, Bottas, Hamilton, Magnussen and Albon.
"Bouncing is pretty bad mate".
Hamilton slots into sixth on the mediums. He did make a mistake in the final couple of corners so there's more to come from Mercedes.
He goes 0.5s quicker than Verstappen at the top of the timesheets albeit on the softer rubber.
Perez gets within 0.2s of Verstappen. Both drivers on the hards.
He's the first driver on the softs - 0.4s off the pace.
He's 0.8s down on Verstappen.
Big upgrades for Alfa Romeo this weekend - he's seventh overall, 1.2s down on Verstappen.
Verstappen, Leclerc, Sainz, Tsunoda, Stroll, Hamilton, Gasly, Ocon, Magnussen and Russell.
He's 0.9s off Verstappen's top time.
His advantage is now 1.1s over Stroll. Astonishing.
He's had a spin at Turn 7.
"There's zero grip. It's getting worse and worse."
He's currently 0.5s clear at the top of the timesheets and going quicker on his current lap.