"I missed three greens and I was 1 under par," Langer said. "That was pretty cool and it kept me in the lead."
Langer topped his second shot out of the fairway bunker on the par-5 No. 10, and his third shot rolled about 10 feet off the green. He chipped in for the crucial birdie and then kicked his left leg into the air and pumped his fist in response to the reaction from the fans as he extended his lead over Pernice and Toledo back to two strokes.
Lehman said Langer's steely response to trouble on the hole was typical.
"He doesn't get ruffled, first of all," Lehman said. "He doesn't let things bother him. He takes it all in stride. I think he has one of the best perspectives of anyone who has ever played the game."
Chien Soon Lu shot 69 to finish fourth. Duffy Waldorf and Mark Calcavecchia tied for fifth at 4 under.
Chapman, who began the day tied for second, shot 75 to finish 2 under for the tournament.
First-round leader Michael Allen also finished 2 under following his 74.
Toledo, a rookie from Mexicali, Mexico seeking his first tour win, had two bogeys on the front nine and then found more serious trouble. His tee shots on 11 and 12 landed in the water, leading to devastating back-to-back double bogeys.
Langer moved past Toledo for the lead with three straight birdies on Nos. 3, 4 and 5. Toledo fell two strokes behind Langer with bogeys on No. 5 and 6.