HOCKENHEIM, Germany (AP) — Sebastian Vettel needs to keep the pressure firmly on Lewis Hamilton at this weekend's German Grand Prix. At the midway point of the Formula One season — the 11th race out of 21 — Vettel holds only an eight-point lead over rival Lewis Hamilton in an intriguing title contest. Vettel started strongly, then Hamilton took over, and now Vettel appears to be in the ascendancy again. While he leads Hamilton only 4-3 in wins this season, Vettel's most recent victory was particularly poignant seeing it was at Hamilton's home track at Silverstone — where Hamilton has enjoyed huge success.Read more on NewsOK.com