Rosberg beats Hamilton to pole in Mexico

By Alan Baldwin MEXICO CITY (Reuters) - Nico Rosberg said it was "business as usual" after beating Mercedes team mate Lewis Hamilton to pole position for the fourth race in a row on Saturday in the first Formula One qualifying held in Mexico since 1992. German Rosberg will hope Sunday's race breaks a bitter sequence after converting only two of his last 10 poles into victory. Triple world champion Hamilton has won the last three from second place.