He missed his last two greens. He incurred the wrath of playing partner Alejandro Tosti for what Tosti considered slow play. And Lee lost four shots of a five-shot lead. Somehow he managed to hold it together and become the fifth first-time winner on Tour this season.

HOUSTON — Min Woo Lee kept his calm amid tremendous charges by Scottie Scheffler and Gary Woodland, winning the Texas Children’s Houston Open on Sunday for his first PGA Tour title with the best lag of his life that set up a final par for a one-shot victory.