On October 1, 2011, Na apparently whiffed his tee shot on the par-4 15th hole in the third round of the Justin Timberlake Shriners Hospitals for Children Open at TPC Summerlin in Las Vegas, missing high and to the outside of the ball. Tour officials, though, ruled Na was not intending to hit the ball and did not count the swing as a stroke, and Na finished with a 5-under 66 to remain tied for the tournament lead. The following day, Na earned his first PGA Tour victory at the 211th attempt, having been on tour for eight years. He shot a final round 65 with birdies at 15, 16 and 17 to win by two strokes from Nick Watney and earn $792,000 in prize money. Na also broke the tournament scoring record of 21-under par when he finished the week at 23-under par. This victory earned Na a two-year exemption on tour. He ranked 30th in season earnings.