Red Bull Racing showed that it still has a solid gap over the opposition in F1 at the moment in the second practice session in Korea on Firday. Sebastian Vettel was three-tenths ahead of team-mate Mark Webber, while the rest trailed the Australian, the pack headed by Fernando Alonso, Jenson Button, Michael Schumacher, Felipe Massa and Nico Rosberg. Lewis Hamilton was eighth ahead of Nico Hulkenberg and Kimi Raikkonen. Romain Grosjean was 11th chased by Bruno Senna, Paul di Resta, Kamui Kobayashi, Sergio Perez, who stopped out on the track, Jean-Eric Vergne and Dan Ricciardo. Pastor Maldonado had a minor off but did not seem quick and was left ahead of the usual back three teams, led by Heikki Kovalainen, with Timo Glock and Charles Pic shaking the tree by getting ahead of Vitaly Petrov. At the back Narain Karthikeyan outran Pedro de la Rosa.