(Eds: With AP Photos.) By JEROME PUGMIRE AP Sports Writer Preseason testing has been surprisingly subdued for Red Bull's Formula One team, which has struggled to top the time sheets and left cynics wondering whether Sebastian Vettel's reign as champion is about to end.
Don't count him out just yet.
The three-time defending champion has been in this situation before. In 2012, he roared back with a string of victories toward the end of the season to overtake Ferrari's Fernando Alonso and win the title in Brazil. And many believe the team's 2013 car has yet to show its full potential as Vettel and teammate Mark Webber prepare for the Australian Grand Prix on March 17.
For Vettel, the 25-year-old German driver known for his boyish charm, it's a chance to make history once again. Winning a fourth consecutive title would put him in the company of F1 greats Manuel Fangio and Michael Schumacher. Fangio won four in a row starting in 1954 and Schumacher won five of his record seven overall...