Mercedes F1 team holding late-night investigation into performance loss

The German manufacturer enjoyed an encouraging first day of testing, but things went awry on Friday as it struggled to find a good balance with the W14.
George Russell ended the day down in 13th on the timesheets, two seconds off pacesetter Guanyu Zhou, while Lewis Hamilton was a further three tenths adrift.
Mercedes’ efforts were further hampered by a hydraulic problem that hit Russell …Keep reading