Lap 593 - 19:24:59 (7:35 AM) - The No. 58 Porsche and No. 39 Lexus are in a tight battle for third place overall, with the No. 39 Lexus holding the positions. The No. 75 Pontiac pits and Jonsson gets in.

Lap 595 - 19:27:04 (7:37 AM) - The No. 60 Lexus makes a routine pit stop. The No. 7 Pontiac pits and Dario Franchitti gets in. The No. 77 Ford pits and Barber gets in.

Lap 596 - 19:29:03 (7:41 AM) - The No. 00 Porsche pits and Zitza gets in. The No. 99 Pontiac pits and Stallings gets in. The No. 81 Porsche pits and McCracken gets in. The second-place No. 39 Lexus and the third-place No. 58 Porsche are separated by just 0.406 seconds.

Lap 597 19:31:30 (7:43 AM) - The No. 58 Porsche takes second place from the No. 38 Lexus between NASCAR Turns 3 and 4. The No. 06 Corvette goes back to its garage.

Lap 600 19:37:25 (7:48 AM) - The No. 02 Lexus leads overall, more than two laps ahead of the No. 58 Porsche. In the GT class, the No. 36 Porsche has a one-lap lead on the No. 65 Pontiac. The No. 67 Porsche pits and Flanagan gets in.

Lap 602 - 19:41:23 (7:51 AM) - The No. 3 BMW spins and continues at the chicane.

Lap 603 - 19:43:00 (7:53 AM) - The second-place No. 58 Porsche leads the No. 39 Lexus by 2.276 seconds. The No. 3 BMW is slow on the apron between NASCAR Turns 1 and 2.

Lap 605 - 19:45:31 (7:55 AM) - The No. 3 BMW is stopped on course. The No. 56 Corvette pits and Connolly gets in. The No. 4 Pontiac makes a pit stop. The No. 39 Lexus pits, surrendering third place to the No. 60 Lexus. Carpentier takes over in the cockpit of the No. 39 machine.

Lap 607 - 19:49:30 (8:00 AM) - The No. 28 Ford pits and Herta gets in. The No. 3 is being towed back to its garage. The No. 5 Ford pits and Knoop gets in.

Lap 612 - 19:57:47 (8:08 AM) - The No. 40 Pontiac pits and Bingham gets in.

Lap 612 - 19:59:55 (8:10 AM) - The race-leading No. 02 Lexus makes a routine stop and Wheldon gets in.

Lap 617 - 20:09:09 (8:19 AM) - The No. 43 Porsche re-joins the field on the track. The GT-leading No. 36 Porsche heads down pit road, but holds the position.

Lap 619 - 20:12:29 (8:22 AM) - The No. 59 Porsche pits and Haywood gets in. The No. 17 Porsche pits and Mowlem gets in.

Lap 623 - 20:19:12 (8:29) In Turn 1, the No. 5 Ford makes contact with another car. The car has significant damage, including a missing nose. The No. 83 Porsche pits and Farnbacher gets in. The No. 58 Porsche pits and Donohue got in.

Lap 624 - 20:22:59 (8:33 AM) - The race-leading No. 02 Lexus makes a routine stop. The No. 7 Pontiac pits and Duno gets in.

Lap 626 - 20:28:41 (8:39 AM) - Under caution driver changes: No. 68 Porsche (Griest).

Lap 629 - 20:37:11 (8:47 AM) - GREEN FLAG waves to continue the session with the No. 02 Lexus in the lead.

Lap 630 - 20:40:06 (8:50 AM) - The No. 60 Lexus has moved into third place overall.

Medical Update: Rick Knoop, driver for the No. 5 Ford, has been examined and released in the infield care center.