Woods' 7-under 63 at the Southern Hills Country Club course tied him with multiple players who have shot 63 in major tournaments -- and gave him a two-day total of 6-under 134, two shots in front of Scott Verplank (66) and three ahead of Geoff Ogilvy (68) and Stephen Ames (69).
Woods almost shot 62 Friday. His 12-foot birdie attempt at the closing hole hit the cup and spun out.
"I knew if I made that putt on the last hole it would have been a nice record to have," said Woods, who is seeking his fourth PGA title and his 13th major crown -- but his first major of 2007.
Woods equaled the course record, fired by Raymond Floyd in the opening round at the 1984 PGA. Floyd went on to win that tournament.