Alfa Romeo's Valtteri Bottas and Guanyu Zhou opened the final one-hour practice session at the Sakhir International Circuit, with Lewis Hamilton also out on track early as he continued to search for solutions for the Mercedes W13's handling issues.
Hamilton was the first driver to set a half decent lap with a 1m34.256s on softs as drivers had to re-adjust to the windy daytime conditions, which are not entirely representative ahead of this evening's qualifying session.
