It was the first 59 on the PGA Tour since Stuart Appleby in the final round of The Greenbrier Classic in 2010.
The others with a 59 were Al Geiberger in the 1977 Memphis Classic; Chip Beck in the 1991 Las Vegas Invitational; David Duval in the 1999 Bob Hope Classic; and Paul Goydos in the 2010 John Deere Classic.
"There's not much I could have improved on today," Furyk said.
For a change, everything went right at the end. Furyk has been haunted in the last two years with a bogey on the 16th hole that cost him a shot at the 2012 U.S. Open, a double bogey at Firestone last year that kept him from winning a World Golf Championship, a bogey-bogey finish in the Ryder Cup to lose a key match to Sergio Garcia last year in Chicago, and a one-shot lead he failed to hold just last month at the PGA Championship.
Making it worse, he was left off a U.S. team for the first time in 15 years when Presidents Cup captain Fred Couples did not make him a wild-card selection. On this day, Furyk gave Couples 59 reasons to reconsider.
WOODS: Tiger Woods was involved in another rules violation Friday in the BMW Championship and was given a two-shot penalty.
Woods began the second round with a double bogey from behind the green. Slugger White, the PGA Tour's vice president of competition, says the tour was notified that the ball moved as Woods was removing twigs from behind it.
White says video indicated the ball moved, although he says Woods was adamant that it only oscillated. White says the video was clear evidence, and Woods was given two more shots. That made it a quadruple-bogey 8 on the first hole, and turned his 70 into a 72.
Woods was at 4-under 138, seven shots out of the lead. The penalty means he is paired with Sergio Garcia for the third round.
EUROPEAN TOUR: In the Netherlands, Pablo Larrazabal shot a 4-under 66 to join fellow Spaniard Miguel Angel Jimenez atop the leaderboard after the second round at the KLM Open.
LPGA: In France, Mika Miyazato of Japan shot a 6-under 65 to take the lead after the rain-delayed first round of the Evian Championship.