The Oakland Raiders and San Diego Chargers are planning a shared stadium in the Los Angeles area if both teams fail to get new stadium deals in their current hometowns, the teams said in a joint statement Thursday night, adding another layer of complexity to a possible NFL return to the region. The proposed $1.7-billion stadium would be in Carson, 15 miles south of downtown Los Angeles and home to the Los Angeles Galaxy soccer team. The statement says the teams have tried and failed for years to find stadium solutions in Oakland and San Diego, and without new agreements in those cities their hands will be forced. ''If we cannot find a permanent solution in our home markets, we have no alternative but to preserve other options to guarantee the future economic viability of our franchises.'' The plan creates the odd prospect of divisional rivals suddenly sharing a home field, and of Los Angeles having two NFL teams after going two decades with none. More...