MOHNTON, Pa. (AP) Rain washed out qualifying Friday in the NHRA Keystone Nationals at Maple Grove Raceway.
The event is the third in the six-race Countdown playoffs.
Antron Brown, the winner of the first two Countdown events, leads the Top Fuel standings - 77 points ahead of Tony Schumacher.
Del Worsham, coming off consecutive Funny Car victories, has a 90-point lead over Matt Hagan. Erica Enders tops the Pro Stock standings and Greg Anderson leads in Pro Stock Motorcycle in their season title defenses.