article_snippet: Jenson Button was almost four seconds slower than Nico Rosberg, who set the pace for Mercedes on Friday’s .
article_snippet: And while Jenson Button managed to get more running under Jenson Button belt during the second session, completing 21 laps, Jenson Button was still almost four seconds down on the front-running Mercedes.
highlights_snippet: Jenson Button and team-mate Kevin Magnussen were well off the pace .
  
highlights_snippet: Jenson Button and team-mate Kevin Magnussen were four seconds slower than Nico Rosberg and Lewis Hamilton .
  