PRATTVILLE - American Stacy Lewis birdied four of the first five holes in firing a seven-under par 65 to grab a two-stroke lead after Saturday's third round of the $1.3 million Navistar LPGA Classic. World No. 3 Lewis matched the low round of the week at the Robert Trent Jones Trail course with a bogey-free day to stand on 15-under 201 after 54 holes with compatriot Angela Stanford second on 203 after a third-round 68. Lewis opened with back-to-back birdies and added another set at the fourth and fifth holes. She closed the front nine with a birdie, added another at the par-4 11th from 15 feet and made her last at the par-3 16th.