With 18 of the best players in the world on hand, Woods shot a score that was five shots lower than any other round played during the first two days of the event.
The world's No. 1-ranked player was already 3-under for the day heading to the seventh tee of the Sherwood Country Club course and he then ran off six birdies over the next eight holes.
Woods stood at 11-under 133 at the halfway point of the tournament while first-round leader Zach Johnson was at 135 after firing a 68. Johnson led Woods by four shots at the start of the round and recorded Friday's second-lowest score, but at the end of the day still wound up trailing Woods.
The score Woods shot Friday came on a course that was not all that easy for some members of the star-studded field. Rory McIlroy shot a 77, Dustin Johnson had a 79 and Hunter Mahan did not make a birdie while firing an 80.
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