Fernando Alonso was top dog in free practice at Interlagos Friday, turning a time of 1:12.314 in the Renault.The Spaniard led the second session ahead of the Toro Rosso of Sebastien Buemi. Rubens Barrichello was third in the Brawn.Mark Webber set the best time in the morning session, with Barrichello splitting the Australian from his teammate, Sebastian Vettel.Championship leader Jenson Button was seventh in the first session, fifth in the second.Kamui Kobayashi subbed for the injured Timo Gl...