The 6-foot-6 Austin finished with 25 points. Vaux's Rysheed Jordan scored a game-high 36 points and was named team MVP. Jordan and Austin, two of the city's top players, are being courted by a list of schools including Syracuse and Temple.
Jordan left the game briefly in the fourth quarter with a leg cramp and required attention after the loss. In the second quarter, he sent the capacity crowd into a frenzy with a wicked crossover and drive to the hoop.
"They went crazy; this is my hometown," Jordan said. "I always hear it, like my high school games."
Philadelphia won the sophomore game, 78-67, behind 19 points from Haverford School's Sammy Foreman and the presence down low of Archbishop Carroll's Derrick Jones.
In the junior game, New York needed overtime to earn a 102-98 win. Neumann-Goretti guard JaQuan Newton poured in 27 points. He lists Arizona, Syracuse, Temple, and Villanova among his top schools.
"I made a big jump this summer working on my [jump shot], and my IQ got better," Newton said.
Contact Matt Breen at mbreen@phillynews.com, or follow on Twitter @matt_breen.