Ferrari driver Fernando Alonso is quickest in practice for Sunday 's Belgian Grand Prix . Alonso posts lap of one minute , 49.032 seconds at Spa circuit . Webber told Formula One 's official website : `` Today was a bit of a messy day with the changing conditions , but it was actually pretty good for us . Comment: Championship leader Mark Webber of Red Bull was 2.6 seconds off Alonso .
Ferrari driver Fernando Alonso is quickest in practice for Sunday 's Belgian Grand Prix . Alonso posts lap of one minute , 49.032 seconds at Spa circuit . Comment: Championship leader Mark Webber of Red Bull was 2.6 seconds off Alonso .