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The 19-year-old Querrey, ranked No. 130 in the world, is the fast-rising youngster who improved more than 600 spots in the world rankings during the 2006 season -- the same year he graduated from high school. He won three USTA Challengers (Yuba City, Calif.; Winnetka, Ill.; and Lubbock, Texas) and won six matches at the ATP Tour level, including his Grand Slam debut at the U.S. Open. He also extended world No. 2 Rafael Nadal and No. 4 James Blake to a decisive third set.
Brengle, 16, earned her entry into the Australian Open by winning an eight-player event at the USTA Player Development Headquarters in Key Biscayne, Fla. She is ranked No. 498 in the world and won her first pro singles title at the $10,000 USTA Pro Circuit event in Baltimore last year as a qualifier. Earlier this month, Brengle reached the Girls' 18-and-under semifinals of the Orange Bowl International.
Last summer, the USTA gave Australians Mark Philippoussis and Alicia Molik singles main draw wild cards into the 2006 U.S. Open as part of a reciprocal arrangement that sees Tennis Australia give the USTA a main draw wild card into Australian Open 2007 to award to players selected by the USTA.