Burroughs's move to the front was not only impressive because he came from four shots back of Jones, the second-round leader.
Betsy King, the second-round leader, could only match par with a 71 and dropped to second at 205.
Duval left the course hours before the second-round leaders and he knew he had given himself a chance to win.
Her tournament score through 27 holes was 17 over par, 22 strokes behind the second-round leader.
Stewart, the second-round leader, could do no better than match par 72.
Last year just 10 of the 44 second-round leaders went on to win.
The second-round leader, Bob Eastwood, shot 72 and was at 203.
Rocco Mediate was the second-round leader at five under par after a 68 today.
Hale Irwin, the second-round leader, was at 210 after a 73.
Billy Mayfair, the second-round leader, was one stroke behind after shooting 69.