Button wary of Kobayashi threat

Jenson Button has warned that Sauber driver Kamui Kobayashi will be a factor in the Chinese Grand Prix. Kobayashi starts the race from third on the grid and his practice pace suggests that he can maintain that for into the race. While Button, who starts fifth, expects Mercedes to drop back despite Nico Rosberg and Michael Schumacher starting on the front row, he is less confident about being able to get ahead of the Sauber.

William Clyde Elliott Nascar updates Naoki Hattori Jim Hall Jean Pierre Jarier Chris Irwin