Collin Morikawa shot an 8-under-par round of 64 to lead the Hero World Challenge on the PGA Tour.
He holds a five-shot lead over Brooks Koepka on 18-under par ahead of the final round later today.
Rory McIlroy shot a disappointing three-over-par round of 75 to lie in 18th place, 14 shots behind the leader.
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