Serena Williams, Victoria Azarenka clash in U.S. Open women's final

NEW YORK --Serena Williams has blazed a path to Sunday's U.S. Open final without facing a single worthy challenger. Williams has yet to lose a set. She has conceded the fewest games through six matches -- just 16, compared with the 40 lost by second-seeded Victoria Azarenka, her opponent in Sunday's clash between the world's No. 1 and 2 women. At one point, roughly midway through her semifinal rout of Li Na, Williams had won 24 consecutive games.