Vettel fastest in final practice for German GP AP 7/6/2013 10:34:25 AM (AP) Vettel fastest in final practice for German GPNUERBURGRING, GermanyThree-time defending Formula One champion Sebastian Vettel produced a sizzling lap in his Red Bull to post the fastest time by a large margin in Saturday's final practice before qualifying for the German Grand Prix.Vettel is the championship leader and seeking his first win at home. He was .6766 seconds faster than Nico Rosberg. The Mercedes driver has won two of the past three races, including last week's British GP. Unlike then, there were no blowouts of new tires supplied by Pirelli.Mark Webber in the second Red Bull was third fastest, .694 off Vettel's pace.Ferrari's Fernando Alonso, second in the drivers' standings, was .104 seconds back in fourth. Felipe Massa in the second Ferrari was fifth, ahead of Kimi Raikkonen of Lotus and Lewis Hamilton of Mercedes.