BMW Sauber 's Robert Kubica finished bottom of the timesheets , but that came after blowing an engine after 13 laps . Williams tops timesheets in practice for Kovalainen . Kovalainen edges out Lewis Hamilton and world champion Lewis Hamilton . Jenson Button team have confirmed Yas Marina will be their new engine supplier .
Williams tops timesheets in practice for Kovalainen . Kovalainen edges out Lewis Hamilton and world champion Lewis Hamilton . Jenson Button team have confirmed Yas Marina will be their new engine supplier .