WASHINGTON, Oct 12 - The St. Louis Cardinals erased a six-run deficit and scored four runs in the ninth inning to stun the Washington Nationals 9-7 on Friday and advance to the National League Championship Series against the San Francisco Giants. Daniel Descalso and Pete Kozma each had two-out, two-run singles in the ninth for the Cardinals to silence the record Nationals Park crowd of 45,966 and win the best-of-five N.L. Division Series 3-2. ...