Williams has confirmed Sergey Sirotkin will drive for its team alongside Lance Stroll this year, filling the last available place on the 2018 grid.
The news ends months of speculation about Williams' driver line-up after Robert Kubica was in the running to make remarkable comeback with the team. The new deal sees Russian rookie Sirotkin replace Brazillian veteran Felipe Massa, who announced his retirement from F1 last year.
More to follow