She may be the smallest on the court at times, but 5-foot-7 junior guard Jada Walker had the biggest impact on Sunday. Walker poured in a career-high 28 points — highlighted by a crucial and-one layup with 19 seconds to go — and No. 5 seed Baylor women’s basketball escaped No. 4 seed Virginia Tech 75-72 in the Cassell Coliseum in Blacksburg, Va.