America's Justin Thomas has a two shot-lead over Kim Si-woo after the second round of the RBC Heritage. Thomas shot a course-record 10-under-par 61 in his opening round at the Harbour Town Golf Links in South Carolina. The 31-year-old followed it up with a two-under round of 69, featuring four birdies and two bogeys, to finish a couple of strokes ahead of South Korea's Kim. Kim fired the round of the day, a seven-under 64, to claim a share of second place at 10 under with Russell Henley (68). Thomas is seeking his first victory since winning his second major at the 2022 US PGA Championship. England's Tommy Fleetwood kept himself in contention with 66 to share fourth with Andrew Novak while defending champion Scottie Scheffler made 70 and is a further shot back at eight under. Major winners Collin Morikawa (66), Brian Harman (69) and Wyndham Clark (70) are part of a five-way tie at seven under.