Walker finished with six points - four of which came in the fourth quarter with St. Marys comfortably ahead.
Defensively, St. Marys held Tygarts Valley leading scorer Shanda Howell to a season-low seven points - 12 below her average. Howell, a senior, finished 3-for-13 with 10 turnovers and one assist.
"I thought they were holding and grabbing more than they were playing good, solid defense," DiPasquale said of St. Marys.
Tygarts Valley (17-8) never scored in double figures in any quarter and finished 9-for-43 (20.9 percent) from the field. The Bulldogs missed 34 shots and had 34 turnovers in losing by 28 points to St. Marys for the second time this season.
The win was the 15th straight by St. Marys, which has beaten opponents by an average of 23.5 points during the streak.
The Blue Devils' last - and only - defeat this season came Jan. 7 at home to Wheeling Central.
St. Marys and second-seeded Wheeling Central will rematch in Friday's semifinals at 9:30 a.m.
Meeks said his team was 11-for-36 from 2 feet away from the basket in a 57-53 loss to Wheeling Central that came two months ago today.
"Not from the floor," he said. "From 2 feet. We did some things to ourselves."
Contact sports editor Chuck McGill at chuck.mcg...@dailymail.com or 304-348-7949.