Nazareth, Pa. ? Jason Keller won the Stacker2 200 on Sunday for his fourth Busch Series victory of the year, easily pulling away in the race marred by serious injuries to Jeff Purvis.

Purvis sustained head, neck and back injuries in a wreck involving Greg Biffle on lap 168 between Nazareth Speedway’s first and second turns.

Purvis’ engine blew exiting pit road, spilling oil onto the track. His car hit the outside retaining wall and came to a rest with the nose facing the infield.

Biffle’s car slid through the oil and crashed into driver’s side door of Purvis’ car. The race was red-flagged on lap 176 for just over 20 minutes while safety personnel cut the roof off the car to remove Purvis.

Track medical officials said Purvis was unconscious at the scene and was taken to the infield care center where he was alert. He was then flown to the Lehigh Valley Medical Center in Salisbury Township, just west of Allentown.

Dr. K. Shah, trauma surgeon at the medical center, said Purvis was in serious but stable condition after sustaining a contusion of the left base of the brain and a fracture of the first and second vertebrae. Shah said Purvis was moving all of his extremities and was undergoing further testing.

Biffle was briefly unconscious, but was able to climb out of his car. He was taken to the infield care center where he was alert, and then transferred to St. Luke’s Hospital in Bethlehem, where he was evaluated and released.

Keller’s teammate, rookie Scott Riggs, finished second, followed by Ron Hornaday, Jamie McMurray, Randy LaJoie, Bobby Hamilton Jr., Jay Sauter, Ashton Lewis Jr., Mike McLaughlin and Tony Raines.