Harvick led for just 10 laps

Ryan Newman recorded his fifth NASCAR Winston Cup victory of the season in another battle of fuel calculations at the Michigan 400 on Sunday.

Newman, who drives a Dodge, finished 1.6 seconds ahead of the Chevrolets of Kevin Harvick and Tony Stewart after Kurt Busch's Ford ran out of fuel with three laps to go at the two-mile Michigan International Speedway.

Todd Bodine and Kenny Wallace escaped injury after they collided on lap 63, causing a huge fireball.

Dale Earnhardt Jr's title bid received a blow after a pit-lane incident involving former champion Rusty Wallace.

On lap 78, when another caution was waived, Wallace appeared to pit but then changed direction, colliding with the luckless Earnhardt.

On Saturday, pit strategy and rain helped Kevin Harvick win the shortened Cabela's 250 NASCAR Busch Series race at Michigan International Speedway.

Reigning Winston Cup champion Tony Stewart, making his first Busch start since 1998, dominated the race, leading 82 of the first 100 laps.

Stewart gave up the lead to Harvick when he putted on lap 101 and had worked his way back up to 11th when the race was red-flagged.

More rain forced officials to call it a day about 40 minutes later and Harvick claimed victory - despite having led for just 10 laps.

"We tried to play the strategy out there at the end," said Harvick, whose victory was the 11th of his career and his third this season.

"Tony probably had the best car. I think everybody was going to pit. We'd have had to pit, too."

Harvick, the 2001 Busch Series champion, has finished in the top 10 in all nine of his Busch starts this year, including seven top-threes.

Pole-sitter Kasey Kahne was second, followed by Bobby Hamilton Jr, David Green and series leader Scott Riggs.

Green gained five points on Riggs and now trails by just two in the championship race.