SILVERSTONE, England - Japanese driver Kamui Kobayashi has apologised to his Sauber mechanics for knocking over three of them when he misjudged a pit stop during the 2012 British F1 GP.Two needed treatment at the circuit's medical centre, one for an injured thumb and the other for cuts and bruises. The third suffered a bruised foot and was treated in the team's garage.MISERABLE AFTERNOON"Of course I had to push hard for points, but without doubt I braked too late in the pits," Kobayashi said. "The front wheels locked, I couldn't control the car, and this is how I overshot the pit box. I am terribly sorry this happened and I hope the three mechanics I hit get well soon."Image Gallery!Swiss team Sauber had a miserable afternoon.Kobayashi finished out of the points in 11th place, Mexican team mate Sergio Perez had to retire after clashing with Williams driver Pastor Maldonado.