A decision by troubled automaker General Motors to drop 20 percent of its dealers is due in part to an oversized network that created stiff internal competition and gave shoppers too much leverage to talk down sticker prices, hurting chances for future sales.Nadal could have some challenging matches on his road to another championship. Lleyton Hewitt is a potential third-round opponent. The former world No. 1 won the U.S. Clay Court Championship this year.Stellar review: Santos' homer lifts Mets over Sox.
