Langer wiped out a six-stroke deficit over the weekend and entered the final round down two strokes to Fred Funk. He finished at 20-under 268 for a five-stroke victory over Scott McCarron and Scott Parel.
Funk shot a 72 to tie for fourth with Marco Dawson (66). He had a triple bogey on No. 12, a hole Langer birdied.
McCarron shot a 69 and Parel 70.
Langer has eight straight rounds in the 60s since the tournament moved to Greystone. He took command on 12 and followed with two straight birdies and another on No. 17.
Lone Oak alum Kenny Perry fired a 1-under-71 Sunday. He finished tied for 20th at 8 under.