K.H. Lee, right, chats with Jordan Spieth at the sixth hole during the third round of the AT&T Byron Nelson tournament in McKinney, Texas, on Saturday. (AP photo)

The South Korean must have known it would be close, same as the low-scoring drama around him that included hometown favorite Jordan Spieth and a couple of other major winners in Hideki Matsuyama and Justin Thomas.

Lee’s 240-yard shot on the par-5 12th hole stopped less than 5 feet from the pin, and the eagle put him in front for good Sunday on the way to a 9-under 63 and a one-shot victory over Spieth at birdie-besieged TPC Craig Ranch.

Spieth shot a 67 to finish a stroke ahead of Matsuyama (62) and Sebastián Muñoz (69), who held or shared the lead the first three rounds.

Xander Schauffele had a career-best 61 and tied for fifth with Ryan Palmer (66) and Thomas (67), who was part of an eight-way tie for the lead at 20 under early in the final round.

K.H. Lee of South Korea tees off on the second hole during the first round of the AT&T Byron Nelson tournament in McKinney, Texas, on Thursday. (AP photo)

A year ago, Lee was playing for a spot in the PGA Championship, where he’ll be again this week at Southern Hills in Tulsa, Oklahoma.

This time it was for a place in history as the 30-year-old joined Sam Snead (1957-58), Jack Nicklaus (1970-71) and Tom Watson (1978-80) as the only repeat winners at the Nelson.

Lee’s career-best round overcame a four-shot deficit going into the final round and put him at 26 under, one shot better than last year. Both of his PGA Tour wins have come at the Nelson.

“It still feels like I’m dreaming,” said Lee, a first-time winner as a father after his wife was pregnant when he won last year. “Last year and this year, to make a good memory.”