Max Verstappen was fastest in a damp final practice session at Spa.
Verstappen was 0.947 seconds ahead of his teammate Sergio Perez and a further 1.072 seconds ahead of title rival Lewis Hamilton.
It was an unexceptional session as the drivers carefully rounded the track on intermediates on a drying circuit – although there were intermittent showers throughout.
Hamilton, who admitted to struggling with the setup of his Mercedes on Friday, had a few perilous moments, including going off at the Les Combes chicane, the same place where Ferrari Charles Leclerc crashed during second practice.
McLaren’s Lando Norris was fourth ahead of the impressive Esteban Ocon in the Alpine.
Lance Stroll and Sebastian Vettel were once again sixth and eighth, continuing their good form on Friday in the Aston Martins – this time they were split by Pierre Gasly’s Alpha Tauri, who had a near-miss with the barriers after a spin.
George Russell enjoyed a positive session in the Williams and was 2.568 seconds off the pace.
The other Alpine of Fernando Alonso rounded out the top 10, while Hamilton’s teammate Valtteri Bottas was 11th, 2.884 seconds behind Verstappen.