"I'm very relieved to win for the first time," said Kruger. "If you want to win you need to make putts on the final day and I did that today.
"It's a big relief now that I've won but I think I needed all those second-placed finishes to be able to appreciate it. There was no pressure even when I made my only bogey of the day on the 17th."
Kruger had just three bogeys all week and padded his lead Sunday with birdies at 4, 6, 8. He was up by three after another birdie at the par-3 11th hole.
He made the final holes interesting, however, when he overshoot the green with his approach at 17 and wound up with a bogey. He drive in 18 hit a camera and his second ended up in the trees.
But his third ended up just 10 feet from the cup and he made the putt for par.