Kim takes 1-shot lead over Thomas, Novak at Heritage

South Korean Kim Si-Woo fired a five-under-par 66 on Saturday to seize a one-shot lead over two-time major champion Justin Thomas and Andrew Novak after 54 holes at the US PGA Tour's RBC Heritage in South Carolina.

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Kim, a four-time PGA Tour winner, had six birdies through the first 15 holes, pushing his lead to as many as three before a bogey at the par-four 18th where overnight leader Thomas birdied to pull within one.

"I played great," Kim said. "Only missed the last hole so that's not a big deal. I played pretty much 35 holes really decent, so I'm not going to worry about the last hole for tomorrow."

Kim who says he's trying to use his failure to book a Masters berth for the first time since 2017 as motivation, had started the day two adrift and started motoring up the leaderboard with birdies at the first and second.

He added two more at the fifth and ninth where he got up and down from a greenside bunker and build his lead with birdies at 13 and 15 where he rolled in a 19-foot putt.