Johannesburg, July 8 (ANI
): Reigning world champion Lewis Hamilton
produced a superior performance as he narrowly edged past Mercedes
team-mate Nico Rosberg
to emerge as the fastest driver in the opening practice session of this weekend's British Grand Prix
The three-time world champion, who clocked his best lap in one minute and 31.654 seconds, was just 0.033 seconds faster than Rosberg and eighth-tenths of seconds quicker than third-placed Nico Hulkenberg of Force India.
Meanwhile, Ferrari's Sebastian Vettel finished fourth quickest ahead of Red Bull's Daniel Ricciardo and team-mate Kimi Raikkonen,Sport24 reported.
Earlier, Hamilton and Rosberg were instructed to obey a revised 'code of engagement' after their three collisions in five races of the season.
Hamilton slashed down Rosberg's lead in the Formula One world championship from 24 to 11 points after winning the Austrian Grand Prix last week.(ANI