A raft of engine changes - forced or strategic - have led to a bundle of penalties at Spa for many drivers and to a rearranged starting grid.
In addition to the collection of demotions that were known since Friday, a few last minute changes have further tweaked the starting order.
Alfa Romeo's Antonio Giovinazzi has taken on additional power unit elements and will thus start P18, while an engine failure for Williams' Robert Kubica required changes to the Pole's FW42 under parc Fermé conditions, triggering a pit lane start.
Here's the definitive grid for this afternoon's race.
